Las Brisas Dam dam
Las Brisas Dam
Las Brisas Dam, located in Eureka, Missouri, was completed in 1970 and serves as a recreational facility for water resource and climate enthusiasts. The dam, primarily made of earth and stone, stands at a height of 46 feet and has a length of 470 feet, creating a reservoir with a storage capacity of 173 acre-feet. The dam is regulated by the DAM AND RESERVOIR SAFETY PROGRAM and is inspected regularly to ensure its safety and functionality.
With a high hazard potential and a satisfactory condition assessment, Las Brisas Dam poses moderate risk, as indicated by a risk assessment rating of 3. Despite this, the dam meets regulatory guidelines and has emergency action plans in place. The dam's spillway, with a width of 40 feet, helps to control water levels in the reservoir and prevent flooding downstream. The dam is also situated on a tributary of Little Fox Creek, providing additional opportunities for water-related activities and recreation.
Overall, Las Brisas Dam offers a valuable resource for the community, providing both recreational opportunities and essential water storage capacity. With its strategic location in Franklin County, Missouri, and its regulated operation, the dam stands as a testament to responsible water management practices and serves as a focal point for water resource and climate enthusiasts to enjoy and appreciate.
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 Las Brisas Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Meramec River At Pacific | 1,250 cfs | → |
| Bonhomme Creek Near Ellisville | 2 cfs | → |
| Meramec River Near Eureka | 1,900 cfs | → |
| Big River At Byrnesville | 377 cfs | → |
| Bourbeuse River At Union | 311 cfs | → |
| Kiefer Creek Near Ballwin | 5 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Las Brisas Dam.
Boat launches
- Katy Trail 1800, Saint Charles County
- Stierberger Court Union
- Downtown Washington
- Highway Uu Franklin County
- Grand Glaize Pkwy 1084, Valley Park
- Kirkwood
Campgrounds
- Klondike County Park
- Robertsville State Park
- Babler Memorial State Park
- St. Peters 370 Lakeside Park
- Backpack Camp 7
- Camp Trinity
Paddle runs
Track Las Brisas 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 Las Brisas Dam
Where does the data for Las Brisas 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 High 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 Las Brisas Dam.