A public analysis of pumped construction-drain discharge, unfinished Phase 1 attenuation, rainfall context for June–August 2026, and a village-wide pattern of new development flooding older adjoining property.

Prepared for public consumption and official consideration. Little Ranch Estates · Palomino Street corridor · Adjacent Terra Lago buildout · River Oak / Fernwood Forest · Booker Park. September 7, 2026.

This document is an evidence briefing for elected officials, planning staff, SFWMD, FDEP, and the public. It compiles the available record. It does not infer wrongdoing. It asks the questions the events require.

Executive Summary

Terra Lago is building Phase 1 of an 806-acre successor to the old Indiantown DRI while the lakes and attenuation assigned to later phases remain years away. During the last six weeks, construction stormwater has been pulled from a site drain with a municipal-scale diesel pump, run about 900 feet to a confluence, split at a Y, and sent toward woods and rest areas along the shared edge with older rural land. That is not historic sheet flow. It is concentrated, mechanical export of unfinished Phase 1 water.

Rain does not explain it. A 50-year climatology assembled for ZIP 34956 shows June–August 2026 at roughly 70–95 percent of the SFWMD Martin/St. Lucie normal for those three months. Official August at Fort Pierce finished 2.67 inches below normal, with no day of 1.00 inch or more. Year-to-date surplus at coastal airports came from a wet April, not from a tropical siege. There were no Florida hurricane landfalls through September 1, 2026. The wet season did its ordinary job: many small wet days, few extreme days.

What is new is the land. Terra Lago sits about two feet higher than Little Ranch Estates on Palomino Street. Documented hardpan on the development side is near eight feet; on the ranch side the restrictive layer is near 14–18 feet. New roofs and roads sit on a shallow perched table. A 75-foot private well on the ranch side draws from the same surficial aquifer that receives that perched water. Rainbow sheen — the look of petroleum from street runoff — was visible on the confluence trail.

The same season produced a second, separate harm: in another part of the adjacent Terra Lago buildout — not in Little Ranch Estates — standing water on pre-existing homes reached wastewater / septic height and remained for days. River Oak at Fernwood Forest has the same neighbor geometry. After the August 30 storm the Village Manager stated that drainage structures were compromised even inside new development. Booker Park flooded after a $2.18 million drainage project. This is a pattern, not a Palomino-only dispute.

The Terra Lago PUD requires each phase to stand alone for stormwater and forbids relying on future phases for treatment and attenuation. Existing canals, swales, and culverts were to stay in service until replacements were certified. Florida Building Code Appendix J forbids excess or concentrated drainage across property lines beyond pre-grade conditions. SFWMD rules require no adverse off-site flooding and legal authorization to use land the applicant does not own. FDEP’s Construction Generic Permit does not treat petroleum sheen as routine dewatering.

1. Purpose and how to read this briefing

This briefing is written for residents, Village Council, Martin County staff, South Florida Water Management District, and the Florida Department of Environmental Protection. It compiles site measurements, pump hydraulics, published rainfall, PUD text, and publicly reported flooding into one place so the argument is not scattered across meetings.

Little Ranch Estates on Palomino Street is the rural measuring point for the pumped discharge, the 75-foot well, and the two-foot grade difference. It is not the location of the wastewater-height standing water. That event occurred in a different part of the adjacent Terra Lago buildout, on homes that predate the current construction.

Nothing here is a claim of criminal intent. It is a claim about design, timing, and result: Phase 1 is operating as if neighboring land were temporary retention.

2. The place

Terra Lago

Terra Lago is the 806-acre planned unit development at 16205 SW Warfield Boulevard, the successor to the Indiantown DRI approved by Martin County before Village incorporation. The Village approved the current PUD in December 2021. Entitlements run to about 2,500 residences plus commercial space. A Community Development District was created in 2022. Phases 1A and 1B are the active construction. Later residential phases are scheduled years out (public phasing tables have pointed to 2027–2028 for major later phases).

Little Ranch Estates

Little Ranch Estates is unincorporated western Martin County rural residential land on and around SW Palomino Street, ZIP 34956. The corridor sits outside the Village line and against it. Uses include homes, livestock, gardens, and ponds. A private well on the Palomino property is about 75 feet deep — in the Surficial Aquifer System, not the deep Floridan.

Distance and grade

The storm drain used as the pump source is 3,300 feet from the Palomino measuring point. National Geodetic Survey comparison puts the development about two feet higher. Two feet in 3,300 feet is a slope of about 0.061 percent — almost flat, but not neutral. Gravity still prefers the ranch. A pump removes the slowness.

3. Rainfall control: June–August 2026 was not a flood year

A 50-year rainfall and special-weather analysis for Indiantown 34956 (1976–2026), updated September 1, 2026, is the control. It uses SFWMD Martin/St. Lucie normals, the historic Indiantown cooperative station, nearby CoCoRaHS and private gauges, NCEI county series, and NWS Melbourne statements. There is no official daily gauge on Palomino Street for fifty years; the file says so. The regional truth is still clear.

Year-to-date totals at Fort Pierce and Vero Beach were above normal through August 30 because April was wet (Fort Pierce 3.8 inches on April 9), not because summer stacked a second surplus. Atlantic named storms through September 1 did not make Florida hurricane landfall and were not local rainmakers. The 23 August flood advisory and the August 30 Booker Park pulse were training convective cells — the same family the 50-year file already classifies as infrastructure-plus-intensity events, not Frances/Jeanne/Irma analogs.

Design comparison from that file: one Ian rain job at Indiantown 0.4 SW (7.32 inches) roughly equals the entire official August 2026 at Fort Pierce. Frances and Jeanne in September 2004 put 22.68 inches on Martin County in one month — about the entire three-month summer of 2026. The last six weeks are not that loading.

4. Why their water perches and moves toward older land

Hardpan mismatch

A hardpan (spodic / restrictive layer) is a floor under the sand. Water soaks down, hits the floor, and must move sideways.

A dry pond on the ranch side is evidence that the local table can fall. It is not a promise that a 75-foot well is sealed from surface discharge. Martin County’s Surficial Aquifer System is generally the sand and shell from near the surface to on the order of 100–150 feet. The 14–18 foot pan sits in the top of that aquifer. The Hawthorn confining unit that isolates the Floridan is hundreds of feet deeper. A 75-foot well is in the same body of water the rain hits.

Impervious Phase 1

Phase 1 replaces pasture and woods with roofs, roads, compacted pads, and unfinished lakes. Runoff coefficient rises before the master attenuation assigned to later phases exists. Construction-phase dirt sheds faster than the old cover. That is when a storm drain fills and a pump appears.

5. The discharge that was measured

What was running

A municipal-style tow-behind diesel trash pump on an 8-inch hose is the class of machine used for flooded drains and sewer bypass. Realistic continuous duty for that class is about 2,200–2,700 gallons per minute (about 3.2–3.9 million gallons in 24 hours; about 9.5–12 million gallons in three days). That is 10–12 acre-feet per day — a foot of water on about 11 acres if nothing soaks or runs off.

Path

1. Intake: storm drain on the Terra Lago construction site.
2. Confluence channel: about 900 feet of roughly 8-foot-wide, 2.5-foot-deep trench before the Y. Full-trench storage is about 135,000 gallons — roughly 50–60 minutes of pumping if nothing left the far end. At operating depth the water crawls at about 0.7 feet per second and reaches the Y in about 20 minutes.
3. Split: one trail toward a wood line, one toward a secondary rest area.
4. Ranch measuring point: 3,300 feet from the source drain, about 2,400 feet after the Y if the 900-foot run starts near the hose.

After the first hour the 900-foot trench is no longer a pond. It is a conveyor. An even split still sends about 1.6–1.9 million gallons per day down each trail. An uneven split — the usual case without a weir — can put 70–90 percent on one path.

What the hose does at the dirt

An 8-inch line at 2,500 gpm is a jet of about 15–16 feet per second. In the trench that speed dies to under 1.5 feet per second. Without a dissipator the entry scours. The trench is large enough to carry the pump. It is not large enough to hide a multi-day discharge. The woods and the secondary rest area still have to accept the acre-feet.

6. Water quality: sheen on the confluence trail

Rainbow film on water that came out of a street drain is the ordinary look of petroleum — oil, diesel, hydraulic fluid, asphalt oils, vehicle drips. New pavement and construction equipment make that more likely. A visible sheen is a water-quality event, not a color of tannin swamp water.

FDEP’s Construction Generic Permit treats dewatering as routine only when the water is uncontaminated. Oil and grease with a visible sheen is the opposite assumption. That water was aimed at a wood line 3,300 feet from a 75-foot surficial well. The sheen does not prove the well is already contaminated. It does prove the source water was dirty and that a pathway exists. The useful laboratory list, if the well is household or livestock water, includes oil and grease or TPH, BTEX, and the ordinary bacteria and nitrate panel — not potability alone.

7. Phase 1 cannot wait on Phase 2 and 3

Public PUD text for Terra Lago is specific:

• Each phase of development shall be self-supportive.
• The owner shall provide a pro-rata share of stormwater facilities in each phase so the phase can stand alone or with previous phases and not rely on future phased improvements to satisfy required stormwater quality treatment and attenuation.
• Existing canals, swales, and culverts shall remain active until proposed facilities necessary to maintain existing drainage level of service are constructed, certified, and released.
• Road crossings over the historic conveyance ditch through the old DRI site must keep required conveyance.
• Discharged water shall meet Florida Administrative Code Rule 62-302. Stormwater permits are the owner’s responsibility with SFWMD. The Village does not maintain the private system.

Later phases that “will hold the retention required today” are the future facilities the PUD says Phase 1 may not lean on. A two-to-three-year wait is not a stormwater plan. A diesel pump in a Phase 1 drain is the substitute.

8. Adjacent flooding: a village pattern, not one ranch

Correction of location

Wastewater-height standing water was observed on pre-existing homes in a different part of the adjacent Terra Lago buildout. It was not observed as the Palomino / Little Ranch Estates event. That distinction matters. Little Ranch is the pumped-discharge and well case. The wastewater-height case is older housing against another edge of the same construction.

Water that sits at the elevation of a septic tank or drain field for days is not a wet lawn. Drain fields stop working when saturated. Tanks can back up. Standing water carries bacteria. Homes that predate the PUD did not bargain to become the construction pond.

River Oak / Fernwood Forest

River Oak at Fernwood Forest (River Oak Fernwood Holdings) is the 55-acre project between Famel Boulevard and Fernwood Forest Road, approved by the Village in 2023, about 131 homes. Neighbors already warned that the project would load Famel and Fernwood Forest. Adjacent older lots flooding after that construction is the same geometry: new grade and new roofs, old houses on the receiving side.

Booker Park and the Village’s own sentence

On August 30–31, 2026, Booker Park and other village streets flooded after several inches of rain. Residents who had lived through hurricanes said they had never seen it remain after dark. Booker Park had already received a $2.18 million drainage project. Village Manager Taryn Kryzda said drainage structures were compromised even in the new development, and that the problem was not confined to one area. That statement is the institutional admission that new pipes are not containing new runoff — which is exactly how older adjoining land becomes the overflow.

Indianwood

Indianwood, less than a mile from Terra Lago, documented months of off-site construction dust. Off-site impact from this PUD is already a public fact. Water is the heavier version of the same neighbor problem.

9. Rules that already apply

This section is a map of existing standards, not a lawsuit.

• Florida Building Code Appendix J, J109.4: drainage across property lines shall not exceed that which existed prior to grading. Excess or concentrated drainage shall be contained on site or directed to an approved facility.
• Florida reasonable-use / natural-flow doctrine: a lower owner accepts historic natural surface water. A lower owner does not have to accept a new pumped, concentrated construction discharge or a raised outlet that reverses the neighborhood’s overflow.
• SFWMD / ERP Applicant’s Handbook: no adverse flooding to off-site property; use of land not owned by the applicant requires recorded legal authorization. Changing rate, concentration, or location of discharge onto a neighbor is the change that triggers that authorization.
• Martin County and Village construction rules: construction runoff is to be controlled on site with BMPs so it does not become an illicit discharge onto neighboring property. A legal positive outfall is required; without one, large storms stay on site.
• FDEP NPDES Construction Generic Permit: sediment stays on site; dewatering of uncontaminated water only under the listed conditions; a discharge that causes or contributes to a water-quality violation is supposed to stop.

A construction pump, a sheen, a Y aimed at woods, and wastewater-height water on older lots next to the same buildout are the field conditions those rules were written to prevent.

10. Findings

1. June–August 2026 was a near-normal to dry wet-season quarter at official and nearby gauges. It was not a 2004-class or hurricane-landfall loading of western Martin County.
2. Terra Lago Phase 1 is generating and moving construction stormwater with a municipal-scale pump from a site drain 3,300 feet from Little Ranch Estates, through a 900-foot confluence to a Y.
3. The development is about two feet higher, with a shallower hardpan, more new impervious area, and unfinished master attenuation. Those facts create a perched, downhill export — not a natural pre-DRI flow.
4. Visible petroleum sheen on the confluence trail means the exported water is not clean rain. A 75-foot surficial well on the ranch side is in the same aquifer.
5. Wastewater-height flooding of pre-existing homes occurred in a different part of the adjacent Terra Lago buildout, not in Little Ranch Estates. It still belongs to the same project edge.
6. River Oak / Fernwood Forest and Booker Park show the same neighbor-overflow result. The Village Manager stated that even new-development drainage structures were compromised.
7. The PUD text forbids relying on Phase 2 and 3 to provide today’s treatment and attenuation. Using adjoining land as the waiting room for those phases is the current operating result.

11. What public bodies should consider

The useful official questions are operational, not rhetorical.

1. Is the Phase 1 stormwater system that was permitted actually built, connected, and certified — or is a pump substituting for it?
2. Where is the legal positive outfall for the water leaving the 900-foot confluence? Is there a recorded authorization to use land or woods that the applicant does not own?
3. Does the current discharge rate, location, and concentration match the pre-development condition required by Appendix J and the ERP?
4. Was dewatering / drain pumping listed in the SWPPP, and was the water tested after a visible sheen?
5. What is the Village’s inspection record for Phase 1 lakes, historic ditch crossings, and perimeter grade relative to Little Ranch and the other pre-existing edge?
6. How will Phase 1 be required to hold its own water until later phases exist — not two to three years from now, but this wet season?

Residents documenting this should keep dated photographs of the drain, the pump, the 900-foot run, the Y, the sheen, and any water on the pre-existing Terra Lago edge; note start and stop times of the pump; and separate Little Ranch observations from the wastewater-height location so the record stays accurate.

12. Closing

Little Ranch Estates is not asking the sky to stop raining. The 50-year file shows the sky did not do anything unusual. The request is simpler: Phase 1 should hold Phase 1 water on Phase 1 land, without a diesel pump, without a sheen, and without older adjoining homes sitting at wastewater height for days while the ponds assigned to 2027 and 2028 remain a line on a phasing table.

When new construction on three edges of Indiantown produces the same neighbor result, the defect is not one ranch’s ditch. It is a build-now, retain-later habit that treats people who were already there as temporary infrastructure.

September 7, 2026 · Little Ranch Estates · Adjacent Terra Lago buildout · River Oak / Fernwood Forest · Booker Park. Written for public sharing and official consideration. A compilation of the available record — not an inference of wrongdoing, and not legal advice.

Bottom line

The studies being used to justify Terra Lago in 2026 are the February 12, 2008 Indiantown DRI and PUD adoption, the July 10, 2012 traffic update, the June 2021 environmental assessment, and the October–November 2022 Phase 1B statements. Nothing in the public approval chain after that is a new required impact study of the project as it is actually being built, or of the neighbors it is actually wetting.

Major site plans and the fifth and sixth PUD amendments rode the merits of that primary set. Staff described later changes as a logical evolution of the original DRI. Phase-level “statements” were filed. A new comprehensive impact study of current off-site drainage, adjacent flooding, the jump from 1,650 to about 2,500 units, and commercial growth from 60,000 to 200,000 square feet was not required and was not produced.

The studies still being used — when adopted, at which phase

There is no public packet that lists a brand-new 2025–2026 regional impact study for Terra Lago as built. What is on file is a 2008 DRI spine, a 2012 traffic refresh, a 2021 environmental reuse, and 2022 phase-level statements for Phase 1B.

Precision that keeps this accurate: Phase 1B did have paper. It had an impact statement, a traffic statement, and a drainage report. Those are not a new DRI Application for Development Approval, not a substantial-deviation analysis of the unit and commercial increase, and not a new off-site drainage study of adjoining land as it exists in 2026.

The narrative

2008 — the studies that still govern

In 2008 Martin County approved a Development of Regional Impact and a planned unit development on what is now Terra Lago. That approval rested on a full DRI study set — traffic, environment, drainage, schools, public facilities — and a development order with sixty-seven conditions. The project was 1,650 homes and 60,000 square feet of commercial on about 754 acres, with fifty more acres reserved for a school and park. Those studies were adopted on February 12, 2008. The companion PUD zoning agreement was signed the same day and recorded October 16, 2008, at Official Records Book 2355, Page 2722. That date is the foundation everything later rides.

A DRI in that era was supposed to be the hard look: regional traffic, drainage leaving the property, public facilities, environment. Once the development order was signed, later owners could amend the PUD and keep the study spine. That is exactly what happened.

2008 to 2012 — keep-alive, not a new look

The housing market collapsed. The land sat. Amendments recorded December 12, 2008 and June 2, 2010 kept the paper alive. They did not replace the impact analysis.

On July 10, 2012 the County approved the Third Amendment. That amendment updated the traffic analysis, provided a Proportionate Fair Share Agreement for transportation improvements, extended the first final site plan date, and pushed overall build-out. It was recorded September 14, 2012, at Official Records Book 2601, Page 313. That July 2012 traffic update is the last formal transportation study tied to the DRI itself. It was written for the project as then entitled — still 1,650 units in the original frame — not for 2,500 homes and 200,000 square feet of commercial on a graded Phase 1 site in 2026.

2013 to 2020 — clocks, not studies

Emergency orders after storms, algae blooms, and COVID extended development-order time. The 2021 staff reports list the resulting clocks: Phase 1 final site plan out to 2030 on the old PUD; DRI build-out and termination dates pushed into the 2030s and 2040s. Those orders were not impact studies. They only kept an old approval from expiring.

The Village of Indiantown incorporated in 2017 and inherited the file. The DRI name stayed on the documents. The reviewing government changed. The 2008 studies did not.

December 2021 — the Village accepts the old chassis at a larger program

On December 2, 2021 the Planning, Zoning and Appeals Board recommended approval of a development agreement, the fourth PUD amendment, and a first-phase site plan. On December 9, 2021 the Village Council approved the Terra Lago Development Agreement and the Fourth Amendment to the Planned Unit Development Zoning Agreement.

That night the project was recast. The unused school site came back into the property. The site grew to about 806 acres. The cap moved to about 2,488 residences and 100,000 square feet of commercial. The timetable was sped up so later phases would be applied for years earlier than the old 2030 first-phase clock. Coverage at the time called it a holdover from pre-incorporation days, resurrected by a new owner. Staff later still described the large housing number as inherited from the Indiantown DRI that Martin County approved in 2008.

The Village did not require a new Chapter 380 DRI application. It did not run a substantial-deviation review of the kind the old DRI statute used when unit counts and commercial square footage jumped. It treated the 2008 studies, as touched in 2012, as the merits on which a larger, faster project could proceed. An environmental assessment by EW Consultants, revised June 2021, became the environmental document that later appears in the Phase 1B packet. It predates Phase 1B. It is a reuse.

2022–2023 — Phase 1 site plans on statements, not a new study

Staff later cite May 12, 2022 as Master Site Plan and Phase 1A major site plan approval. Phase 1A is the first civil and vertical phase. It was approved against the December 2021 spine.

Phase 1B was applied for on October 12, 2022, deemed complete December 1, 2022, and approved February 23, 2023. It covers about 130 acres. The Village’s own application list is the proof of what was required and what was not:

• Terra Lago Phase 1B Impact Statement by The MilCor Group, dated October 17, 2022.
• Terra Lago Traffic Statement by PTC Transportation Consultants, dated October 26, 2022.
• Terra Lago Phase 1B Drainage Report and Calculations by The MilCor Group, dated November 2022.
• A stormwater maintenance plan by The MilCor Group, undated in the staff list.
• Terra Lago Overall Environmental Assessment by EW Consultants, revised June 2021 — already a year old when 1B was filed.

Those titles matter. A statement is a memo written against an already-approved master plan. A phase drainage report sizes lakes and pipes for that phase. Neither is a new look at whether 2,500 homes, new roofs and roads, a shallow hardpan near eight feet, a two-foot grade advantage, and unfinished later-phase lakes will push water onto land that was never modeled as Terra Lago’s pond.

The PUD text adopted with these phases is specific on paper. Each phase shall be self-supportive. The owner shall provide a pro-rata share of stormwater facilities in each phase so the phase can stand alone or with previous phases and not rely on future phased improvements to satisfy required stormwater quality treatment and attenuation. Existing canals, swales, and culverts shall remain active until proposed facilities necessary to maintain existing drainage level of service are constructed, certified, and released. Road crossings over the historic conveyance ditch through the old DRI site must keep required conveyance. Discharged water shall meet Florida Administrative Code Rule 62-302.

The study chain never tested whether Phase 1, built years before Phase 2 (public tables have pointed to 2027) and Phase 3 (2028), could actually keep that promise.

2025–2026 — more amendments, still no new impact study

The Fifth Amendment, heard by PZAB on February 19, 2025, changed design standards so plats for 1A and 1B could move. Staff said it did not remove environmental commitments and did not change the overall layout of the previously approved master plan or the Phase 1A and 1B site plans. No new impact study was required. None was produced.

On May 14, 2026 the Village Council approved the Sixth Amendment. Commercial doubled from 100,000 to 200,000 square feet. Units were redistributed across Phases 2 through 5 inside the existing 2,500-unit cap. Internal roads moved. A fire station and more mixed use were placed on a 50-acre commercial piece. Staff told Council there was no change to environmental commitments; that habitat, wetlands, and lake acreage figures from prior approvals still held; that none of the overall development had opened changes to what was committed in previous phases and the original DRI; and that the amendment was a logical evolution of an approved PUD. A traffic consultant report was in the Development Review Colleagues file. That memo is not a new comprehensive impact study of off-site flooding in 2026.

What the missing study would have had to answer

A real impact study in 2021, 2023, or 2026 would have had to treat the project as it exists, not as it existed on February 12, 2008:

• Unit count: 1,650 to about 2,500.
• Commercial: 60,000 square feet to 200,000.
• Government: Martin County DRI process to Village PUD amendments.
• Speed: a 2030 first-phase clock to houses in the ground in 2025–26.
• Grade: development about two feet higher than Little Ranch Estates on Palomino Street, 3,300 feet from the drain used as a pump source.
• Soils: hardpan near eight feet on the construction side versus 14 to 18 feet on the ranch side, with a 75-foot private well in the Surficial Aquifer System.
• Phasing: Phase 1 lakes and pipes built while the retention assigned to later phases remains two to three years away.
• Adjoining land that predated the PUD, including a different edge of the same buildout where water later stood at wastewater height for days.

None of those questions is answered by a 2008 ADA, a 2012 traffic update, a June 2021 environmental reuse, or an October 2022 “statement.”

What that gap produced on the ground

A 50-year rainfall analysis for ZIP 34956, updated September 1, 2026, is the weather control. June through August 2026 at nearby gauges was about 16 to 21 inches against a 22.06-inch SFWMD Martin/St. Lucie normal — roughly 70 to 95 percent of a normal wet-season quarter. Official August at Fort Pierce finished 2.67 inches below its own normal, with no day of 1.00 inch or more. Year-to-date surplus at coastal airports came from a wet April, not from a tropical siege. There were no Florida hurricane landfalls through September 1, 2026. This was not Frances and Jeanne. It was not Irma. It was not a flood year.

What was new was the land. Phase 1 replaced cover with roofs, roads, and compacted pads before the master attenuation assigned to later phases existed. A municipal-style tow-behind diesel on an 8-inch hose — the class used for flooded drains — pulled water from a Terra Lago storm drain. Realistic continuous duty for that class is about 2,200 to 2,700 gallons per minute, or about 3.2 to 3.9 million gallons in a day. The confluence ran about 900 feet in a shallow trench roughly eight feet wide and two and a half feet deep, then split at a Y: one trail toward a wood line, one toward a secondary rest area. Little Ranch Estates is 3,300 feet from that drain. After the first hour the trench is not a pond. It is a conveyor.

Rainbow sheen — the look of petroleum from street runoff — was visible on the confluence trail. FDEP’s Construction Generic Permit treats dewatering as routine only when the water is uncontaminated. A visible sheen is the opposite assumption. A 75-foot well on the Palomino side draws from the same surficial sand column.

In a different part of the adjacent Terra Lago buildout — not in Little Ranch Estates — pre-existing homes took water to wastewater and septic height. It stood for days. Drain fields stop working when saturated. Tanks can back up. Standing water carries bacteria. Those houses predate this construction. They did not bargain to become the Phase 1 pond.

On the other adjacent side of the new development, toward the opposite boundary from Little Ranch, the added drainage burden caused a sinkhole. That is a third geometry on the same project: pumped export toward one rural edge, wastewater-height standing water on pre-existing homes at another edge, and ground failure where extra water concentrated toward the remaining boundary. A sinkhole in this setting is not a separate mystery. It is what happens when new grade, new impervious area, and unfinished retention change how water sits and moves in sand over a hardpan. Concentrated construction drainage can wash cover soils, open a throat, and leave a hole where the neighbor’s land used to be continuous. The 2008 DRI studies and the 2022 Phase 1B statements did not model that outcome because they were not required to look at the adjoining boundaries as they exist now.

River Oak at Fernwood Forest, the 55-acre project between Famel and Fernwood Forest Road approved in 2023, has the same neighbor geometry: new grade, old houses on the receiving side. After the August 30, 2026 storm, Booker Park flooded following a $2.18 million drainage project. Longtime residents said they had never seen water remain after dark, including after hurricanes. Village Manager Taryn Kryzda said drainage structures were compromised even in the new development, and that the problem was not confined to one area.

The impact of not requiring new impact studies

The cost of skipping a new study is not theoretical. It is the difference between a file that still describes a 2008 project that holds its own water and a 2026 landscape in which Phase 1 exports construction water with a pump.

Without a new study, no one had to model the two-foot grade, the hardpan mismatch, or the 3,300-foot path to Palomino. Without a new study, no one had to show a legal positive outfall and recorded authorization to use land the applicant does not own. Without a new study, Phase 1 could be certified against phase statements while the lakes that “will hold the retention required today” remain a line on a 2027–2028 phasing table. Without a new study, a sixth amendment could double commercial square footage as a logical evolution of the original DRI.

Florida Building Code Appendix J, section J109.4, says drainage across property lines shall not exceed that which existed prior to grading, and that excess or concentrated drainage shall be contained on site or directed to an approved facility. SFWMD ERP rules require no adverse flooding to off-site property and legal authorization to use land the applicant does not own. FDEP’s Construction Generic Permit does not treat petroleum sheen as routine dewatering. The PUD itself forbids relying on future phases. None of those rules is enforced by a study that stopped, in substance, in 2008 and 2012.

Little Ranch Estates is not asking the sky to stop raining. The 50-year file shows the sky did not do anything unusual. The request is that Phase 1 hold Phase 1 water on Phase 1 land — without a diesel pump, without a sheen, without older adjoining homes sitting at wastewater height for days, and without a sinkhole opening on the opposite boundary under an added drainage burden those studies never analyzed. When new construction on three edges of Indiantown produces the same neighbor result, the defect is not one ranch’s ditch. It is a build-now, study-then habit that treats people who were already there as temporary infrastructure.

What public bodies should ask

1. Which adopted study — by date and title — is the Village using as the current off-site drainage and flooding analysis for Terra Lago Phase 1?
2. Was a new comprehensive impact study required at the December 2021 recast, at Phase 1A, at Phase 1B, at the Fifth Amendment, or at the Sixth Amendment? If not, under what code section was it waived?
3. Where is the legal positive outfall for water leaving the 900-foot confluence, and is there recorded authorization to use land or woods the applicant does not own?
4. Does current discharge rate, location, and concentration match the pre-development condition required by Appendix J and the ERP?
5. Was drain pumping listed in the SWPPP, and was the water tested after a visible sheen?
6. How will Phase 1 be required to hold its own water until later phases exist — this wet season, not in 2027?
7. Has the Village or SFWMD inspected the sinkhole on the opposite adjacent boundary, and is it logged as an off-site impact of Phase 1 drainage?

Public-record and published sources

• Village of Indiantown staff reports and resolutions: Terra Lago Development Agreement and Fourth PUD Amendment (December 9, 2021); Phase 1B major site plan staff report listing the MilCor Impact Statement (October 17, 2022), PTC Traffic Statement (October 26, 2022), MilCor Drainage Report (November 2022), and EW Consultants Overall Environmental Assessment (revised June 2021); Fifth Amendment packet (2025); Sixth Amendment hearing May 14, 2026.
• Martin County DRI Development Order, Resolution 08-2.13, February 12, 2008; PUD Zoning Agreement recorded October 16, 2008, OR Book 2355, Page 2722; Third Amendment approved July 10, 2012, recorded September 14, 2012, OR Book 2601, Page 313.
• Hometown News coverage of the December 2021 approval, the 2023 River Oak / Fernwood Forest site plan, and the May 2026 Sixth Amendment, including staff statements that housing numbers were inherited from the 2008 DRI and that later changes were a logical evolution of the original DRI.
• Indiantown FL 34956 — 50-Year Rainfall & Special Weather Analysis (1976–2026), updated September 1, 2026 (SFWMD Martin/St. Lucie normals; NCEI; NWS Melbourne; CoCoRaHS; historic Indiantown coop).
• NWS Miami wet-season departure product, May 1–August 26, 2026; West Palm Beach and Fort Pierce August 2026 climate summaries.
• Public news accounts of Booker Park flooding, August 30–31, 2026, including Village Manager comments on compromised drains in new development (WPTV, CBS12, WPBF).
• Village approval coverage of River Oak / Fernwood Forest (Hometown News, 2023) and later project description.
• Florida Building Code Appendix J § J109.4; SFWMD ERP Applicant’s Handbook language on off-site flooding and legal authorization; FDEP Construction Generic Permit / dewatering FAQ.
• Martin County Comprehensive Plan potable-water element (Surficial Aquifer System depth band).
• Terra Lago PUD / development-agreement drainage clauses as published in Village of Indiantown agenda packets (phase self-sufficiency; no reliance on future phases; historic conveyance; Rule 62-302).
• Field measurements and observations from Little Ranch Estates / Palomino Street (3,300 feet, 900 feet, 8-inch pump class, two-foot NGS comparison, hardpan depths, 75-foot well, confluence sheen); separately, from the adjacent Terra Lago buildout (wastewater-height standing water on pre-existing homes); and from the opposite adjacent boundary of the same new development (sinkhole attributed to the added drainage burden).