Floodgate Report · Killshot
723 wells · 571 with cave / lost-circulation / void / porous karst · 177 with gypsum / evaporite
Where drillers logged lost circulation, caves, voids, or very-porous rock, the bit hit open karst — the vertical pathways water moves through. Where they logged gypsum, they hit the soluble evaporite whose dissolution creates that karst. Each dot is a well; click for its log.
The Investigations
Part I
Mockingbird
Did the rain account for the water? — a public-records examination of rainfall, discharge, soil, and the river’s own numbers, step by step.
Enter the investigation →
Part II · Coming Soon
Foundations
The geology and makeup of the Texas Hill Country aquifer formations, their history, and this investigation’s own in-depth study of 60 years of USGS, Texas A&M, and TWDB documentation.
Part III · Coming Soon
Tsunami
The minute-by-minute events that led up to and transpired along the South Fork of the Guadalupe River and downstream July 4, 2025, followed by the behaviors of city officials afterward.
Part IV · The 2026 Storm Ran the Experiment
Checkmate
July 16, 2026 dropped more rain on the same basin, on saturated ground — and made barely 60% of the 2025 flood. Five pages: the ledger, the inversion, the control, the source, and the creek that flooded before the rain.
See the head-to-head →
Part V · One Page That Ends Any Doubt
Killshot
Where the drill bit found the voids: 723 driller logs across Kerr County — the caves, lost circulation, and gypsum that build the karst conduits, mapped well by well, each one linked to its TWDB record.
See every well →
Live Data & Models
August — The Pressure Watch
Is the South Fork in danger? The wells, read on every visit
The Record
Provenance, preservation, and every revision we watched
Live Conditions
Guadalupe River gauges, Kerr County — live
Lower Trinity Wells
Head above formation top — live tracking
The Mechanism — 3D
The July 4 mechanism, formation by formation
South Fork 2D Model
The flood wave, modeled on 1-m terrain