Graham Lake Dam dam
Graham Lake Dam
Located in La Salle, Texas, the Graham Lake Dam stands as a testament to water resource management and climate resilience. Constructed in 1944, this private-owned Earth dam serves the primary purpose of water supply, with a maximum storage capacity of 143 acre-feet and a normal storage of 73 acre-feet. The dam, standing at a height of 17 feet and stretching 650 feet in length, is situated on the Sauz Creek, under the jurisdiction of the Galveston District.
Despite being a non-federally regulated structure, the Graham Lake Dam plays a crucial role in water management within the region. With a high risk assessment rating of 2, the dam's condition remains unrated, highlighting the need for ongoing monitoring and maintenance to ensure its effectiveness in mitigating potential hazards. While lacking a spillway, the dam features a single outlet gate for controlled water release, emphasizing the importance of strategic infrastructure design in water resource management.
Water resource and climate enthusiasts can appreciate the strategic significance of the Graham Lake Dam in sustaining local water supplies and enhancing climate resilience. As a privately-owned structure, this Earth dam serves as a vital component of the region's water infrastructure, highlighting the essential role of collaboration between public and private entities in ensuring sustainable water management practices. With its high risk assessment and unavailability of hazard potential data, the dam underscores the importance of continuous monitoring and risk management measures to address potential threats and safeguard the community's water resources for the future.
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 Graham Lake Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| San Casimiro Ck Nr Freer | 33 cfs | → |
| Nueces Rv At Cotulla | 3 cfs | → |
| Nueces Rv Nr Tilden | 111 cfs | → |
| Frio Rv At Tilden | 0 cfs | → |
| Frio Rv Nr Derby | · | → |
| San Miguel Ck Nr Tilden | 6 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Graham Lake Dam.
Track Graham 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 Graham Lake Dam
Where does the data for Graham 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 Graham Lake Dam.