Trigg Lake Dam dam
Trigg Lake Dam
Trigg Lake Dam, located in Smithville, Texas, was completed in 1900 and serves as a vital water supply source for the area. This private Earth dam stands at a height of 18 feet with a length of 600 feet, providing a storage capacity of 200 acre-feet. The dam, situated on the TR-Cedar Creek, has a primary purpose of water supply and is designed with a buttress core structure.
Despite its historical significance and essential role in water resource management, Trigg Lake Dam has not been rated for its condition assessment and is classified as having a high risk potential. The dam does not have a spillway and is equipped with only one outlet gate. While it is not under state jurisdiction or regulation, it undergoes regular state inspections and permitting processes.
Water resource and climate enthusiasts interested in Trigg Lake Dam will find its unique design and historical background intriguing. The dam's location in Bastrop County, its association with the Galveston District, and its high risk classification make it a noteworthy structure in the region. As efforts to ensure the safety and efficiency of dams like Trigg Lake continue, understanding its role in water supply and potential risks is crucial for sustainable water management practices.
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 Trigg Lake Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Onion Ck At Us Hwy 183 | 20 cfs | → |
| Plum Ck At Lockhart | 44 cfs | → |
| Williamson Ck At Jimmy Clay Rd | 6 cfs | → |
| Colorado Rv At Austin | 171 cfs | → |
| Onion Ck At Twin Creeks Rd Nr Manchaca | 11 cfs | → |
| Colorado Rv At Bastrop | 3,610 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Trigg Lake Dam.
Boat launches
- Texas 130 Toll, Austin
- Farm To Market Road 973 2801-2899, Austin
- Hyatt Lost Pines Road 575, Cedar Creek
- Little Webberville Park
- Farm To Market 969 1115, Bastrop
- South Pleasant Valley Road 1-79, Austin
Campgrounds
- Mckinney Falls State Park
- Lockhart State Park
- Bastrop State Park
- South Shore Park - Lake Bastrop
- North Shore Park - Lake Bastrop
- Camp Mabry Military
Fishing spots
Track Trigg 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 Trigg Lake Dam
Where does the data for Trigg 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 Trigg Lake Dam.