Medina River near La Coste

1. 32.00 ftThe Farm to Market 471 bridge bottom floods. Many homes near Von Ormy, LaCoste and Somerset flood, some with water to the roof. Livestock in the flood plain are cut off and potentially drowned below Medina Lake to the San Antonio River confluence. Roads and low bridges are flooded and very dangerous to motorists.
2. 28.00 ftDisastrous flooding puts several feet of flow in homes and businesses near LaCoste to below Highway 281. Secondary and primary roads are severely flooded and dangerous to motorists.
3. 24.00 ftDisastrous flooding reaches many homes near Von Ormy and LaCoste putting several feet of water in them. Roads and bridges near the river are flooded and dangerous.
4. 22.00 ftMajor flooding is taking place in the Medina River RV park oh CR 4713. Major flooding reaches lowest homes near Von Ormy. Residents should prepare to evacuate as emergency officials assess the threat. Livestock should be removed from flood prone areas. Roads, streets and low bridges are very dangerous to motorists.
5. 19.00 ftModerate lowland flooding has isolated Medina River RV Park on CR 4713. Lowland flooding threatens homes and businesses near Von Ormy. Many secondary and primary roads and low bridges in the flood plain are flooded and very dangerous.
6. 17.00 ftThe Medina River RV park on CR 4713 will experience widespread flooding and all campers should have been evacuated or moved to higher ground. swift moving water will make rescues dangerous.
7. 15.00 ftMinor lowland flooding begins to impact the Medina River RV park anlong CR 4713. Minor lowland flooding reaches the slab elevation of the Knights of Columbus building just below the bridge over Pearsall Road (Farm to Market 2536). County roads, low bridges and crossings near or over the Medina River are flooded and dangerous.
8. 12.00 ftLow water crossings and bridges are flooded and dangerous.

Chance of flooding, September to November

The three-month chances are the River Forecast Centers’ long-range flood outlook, issued August 28, 2026.

Most recent crests

• July 6, 2002: 32.00 ft
• October 18, 1998: 21.30 ft
• June 22, 1997: 23.97 ft
• March 4, 1992: 19.13 ft
• May 30, 1987: 24.05 ft

• UpstreamMedina River at Medina Lake
• DownstreamMedina River at Macdona
• Leon Creek at Loop 410 near Leon Valley
• Leon Creek at I-35S near San Antonio
• Medina River at Somerset
• Culebra Creek at GCSNA near Helotes
• Hondo Creek at SH 173 near Hondo
• Helotes Creek at Helotes

Forecasts by the West Gulf River Forecast Center. Forecasts are issued as needed during times of high water, but are not routinely available. River forecasts for this location take into account past precipitation and the precipitation amounts expected approximately 24 hours into the future from the forecast issuance time.

Stage, flood stages, impacts and crest history from NOAA’s National Water Prediction Service. Streamflow and the daily record from the U.S. Geological Survey.