Walton Lake Dam dam
Walton Lake Dam
Walton Lake Dam is a privately-owned structure located in SAN GERONIMO, Texas, along the SOUTH FORK SAN GERONIMO CREEK. Built for recreational purposes, this Earth-type dam stands at a height of 49.6 feet with a length of 1250 feet, providing a surface area of 20 acres and a normal storage capacity of 189 acre-feet. The dam is equipped with an uncontrolled spillway, two uncontrolled outlet gates, and has a maximum discharge capacity of 4760 cubic feet per second.
Managed by the Texas Commission on Environmental Quality (TCEQ), Walton Lake Dam has a fair condition assessment as of April 2021. The dam has undergone modifications in 2012 to improve its hydraulic functionality. Despite a moderate risk assessment rating, the dam's hazard potential is not available, indicating a need for further evaluation and risk management measures. With a history of state regulation and inspection, Walton Lake Dam remains an important recreational resource in Bandera, Texas, showcasing the intersection of water resource management and climate resilience in the region.
Dam data reference
Condition Assessment
- Satisfactory
- No existing or potential dam safety deficiencies are recognized. Acceptable performance is expected under all loading conditions (static, hydrologic, seismic) in accordance with the minimum applicable state or federal regulatory criteria or tolerable risk guidelines.
- Fair
- No existing dam safety deficiencies are recognized for normal operating conditions. Rare or extreme hydrologic and/or seismic events may result in a dam safety deficiency. Risk may be in the range to take further action.
- Poor
- A dam safety deficiency is recognized for normal operating conditions which may realistically occur. Remedial action is necessary. POOR may also be used when uncertainties exist as to critical analysis parameters which identify a potential dam safety deficiency.
- Unsatisfactory
- A dam safety deficiency is recognized that requires immediate or emergency remedial action for problem resolution.
- Not Rated
- The dam has not been inspected, is not under state or federal jurisdiction, or has been inspected but, for whatever reason, has not been rated.
Hazard Potential Classification
- High
- Dams assigned the high hazard potential classification are those where failure or mis-operation will probably cause loss of human life.
- Significant
- Dams assigned the significant hazard potential classification are those dams where failure or mis-operation results in no probable loss of human life but can cause economic loss, environmental damage, disruption of lifeline facilities, or impact other concerns. Significant hazard potential classification dams are often located in predominantly rural or agricultural areas but could be in areas with population and significant infrastructure.
- Low
- Dams assigned the low hazard potential classification are those where failure or mis-operation results in no probable loss of human life and low economic and/or environmental losses. Losses are principally limited to the owner's property.
- Undetermined
- Dams for which a downstream hazard potential has not been designated or is not provided.
Plan around the weather
Same NOAA / yr.no feed Snoflo's iOS app uses. Watch the precipitation column on the meteogram -- rain on the basin upstream typically lifts inflow 24-72 hours later.
Next 5 days, hour by hour
Temperature line with weather symbols on top, snow + rain accumulation as columns, humidity as a dotted line.
5-day forecast table
Every 3 hours, broken out across temperature, snow, rain, humidity, and wind. Each cell is colour-coded relative to the column min/max.
| Time | Condition | Temp (°F) | Snow (in) | Rain (in) | Humidity (%) | Wind (mps) | Wind dir |
|---|---|---|---|---|---|---|---|
| Loading detailed forecast… | |||||||
15-day temperature & precipitation
Daily temperatures, snow, and rain projected over the next two weeks.
Nearby streamflow gauges
USGS streamgauges around Walton Lake Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| San Geronimo Ck Nr Helotes | 3 cfs | → |
| Helotes Ck At Helotes | · | → |
| Cibolo Ck Nr Boerne | 12 cfs | → |
| Medina Rv At Bandera | 18 cfs | → |
| Salado Ck At Wilderness Rd At San Antonio | 0 cfs | → |
| Middle Verde Ck At Sh 173 Nr Bandera | · | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Walton Lake Dam.
Boat launches
- Pop's Place. Medina Lake.
- Paradise Canyon. Medina River Access.
- Woodlawn Lake Trail San Antonio
- Nichols Landing. Guadalupe River Access
Campgrounds
- Wilderness Camp Area
- Castroville Regional Park
- Butterfly Springs Camp Area
- Hermit's Shack Camp Area
- Lackland Afb Military
- Kerrville - Schreiner City Park
Fishing spots
Track Walton Lake Dam in the Snoflo app
Save this dam as a favorite and get the local NOAA / yr.no forecast plus regional flow context wherever you are.
About Walton Lake Dam
Where does the data for Walton Lake Dam come from?
Structural and regulatory data come from the U.S. Army Corps of Engineers' National Inventory of Dams (NID). Weather forecast comes from NOAA / yr.no -- the same feed Snoflo's iOS app uses.
How often is the report updated?
NID structural data refreshes annually as the Corps publishes updated assessments. The weather forecast refreshes throughout the day.
What does the Not Available hazard rating mean?
The Corps of Engineers' hazard potential classification grades probable consequences if the dam fails: High = probable loss of human life; Significant = no probable loss of human life but possible economic loss / environmental damage; Low = no probable loss of human life, only minor economic / environmental losses. See the Dam Data Reference card above for the full definitions.
What's "% of normal"?
The current storage value compared to the historical average storage on this calendar day. 100% = right on average; values above 100% mean above-normal storage (wet year); values below mean below-normal (dry year or drought).
Can I get alerts when storage crosses a threshold?
Yes -- alerts are managed in the Snoflo iOS app. Favorite this dam, set a threshold, and you'll get a push the moment conditions cross.
Other water bodies near here
Snoflo-tracked reservoirs and dams within driving distance of Walton Lake Dam.