Lake St. Gallen Dam dam
Lake St. Gallen Dam
Lake St. Gallen Dam, located in Warren, Missouri, is a privately owned structure with a primary purpose of recreation. Completed in 1979, this earth dam stands at a height of 57 feet and has a length of 410 feet, creating a reservoir with a storage capacity of 1087 acre-feet. The dam is regulated by the DAM AND RESERVOIR SAFETY PROG in Missouri and is subject to state permitting, inspection, and enforcement.
The reservoir formed by Lake St. Gallen Dam covers a surface area of 30 acres and has a drainage area of 544 square miles, with a maximum discharge of 656 cubic feet per second. The spillway of the dam is uncontrolled with a width of 6 feet, and the primary outlet gates are valve-operated. Despite being categorized as having a high hazard potential, the dam's condition assessment in 2007 was deemed satisfactory, with a moderate risk assessment rating of 3.
The surrounding area of Lake St. Gallen Dam offers opportunities for recreational activities and serves as a popular destination for water resource and climate enthusiasts. With its picturesque setting and importance in water management, the dam stands as a significant structure contributing to the ecological and recreational landscape of 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 Lake St. Gallen Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Dardenne Creek At Ofallon | 185 cfs | → |
| Cuivre River Near Troy | 1,170 cfs | → |
| Bourbeuse River At Union | 329 cfs | → |
| Bonhomme Creek Near Ellisville | 3 cfs | → |
| Dardenne Creek At Old Town St. Peters | 389 cfs | → |
| Missouri River At Hermann | 133,000 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Lake St. Gallen Dam.
Boat launches
- Brittany Place 1, Lake Saint Louis
- Katy Trail Warren County
- Downtown Washington
- Buchheit Road 128, Franklin County
- Windjammer Point 200, Lake Saint Louis
- Katy Trail 1800, Saint Charles County
Campgrounds
- Klondike County Park
- Camp Trinity
- Cuivre River State Park
- Babler Memorial State Park
- Hermann City Rv Park
- St. Peters 370 Lakeside Park
Paddle runs
Track Lake St. Gallen 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 Lake St. Gallen Dam
Where does the data for Lake St. Gallen 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 Lake St. Gallen Dam.