Lawson Lake Dam dam
Lawson Lake Dam
Lawson Lake Dam, located in St. Peters, Missouri, is a privately owned earth dam with a primary purpose of recreation. Completed in 1970, the dam stands at a height of 25 feet and has a storage capacity of 134 acre-feet. The dam is situated on TR Dardenne Creek and is managed by the Kansas City District of the US Army Corps of Engineers.
With a surface area of 10 acres and a drainage area of 110 acres, Lawson Lake Dam poses a high hazard potential. Despite its condition being marked as "Not Rated," the dam has not been inspected recently. The dam does not have a spillway and its hazard potential raises concerns for the safety and security of the surrounding area. Water resource and climate enthusiasts may find the unique design and recreational purpose of Lawson Lake Dam intriguing, but its lack of recent inspections and high hazard potential warrant further attention and evaluation.
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 Lawson Lake Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Dardenne Creek At Ofallon | 46 cfs | → |
| Bonhomme Creek Near Ellisville | 2 cfs | → |
| Dardenne Creek At Old Town St. Peters | 37 cfs | → |
| Bonhomme Creek Near Clarkson Valley | 6 cfs | → |
| Bourbeuse River At Union | 311 cfs | → |
| Caulks Creek At Chesterfield | 23 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Lawson Lake Dam.
Boat launches
- Brittany Place 1, Lake Saint Louis
- Windjammer Point 200, Lake Saint Louis
- Downtown Washington
- Katy Trail 1800, Saint Charles County
- Buchheit Road 128, Franklin County
- Scott A Lewis Lane Cottleville
Campgrounds
- Klondike County Park
- Babler Memorial State Park
- Camp Trinity
- St. Peters 370 Lakeside Park
- Robertsville State Park
- Cuivre River State Park
Paddle runs
Track Lawson 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 Lawson Lake Dam
Where does the data for Lawson 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 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 Lawson Lake Dam.