Dunn Lake Dam dam
Dunn Lake Dam
Dunn Lake Dam, located in Warren, Missouri, stands as a testament to both the recreational and water supply capabilities of dams. Completed in 1970, this earth dam with a buttress core stretches 490 feet in length and reaches a height of 38 feet, offering a storage capacity of 115 acre-feet. The dam is a vital component in managing the 10.5-acre surface area and 70-acre drainage area, providing both recreation opportunities and essential water supply for the region.
Under the jurisdiction of the DAM AND RESERVOIR SAFETY PROG, Dunn Lake Dam is regularly inspected and maintained, with the last assessment in December 2007 indicating a satisfactory condition. Despite being classified as having a high hazard potential, the risk management measures in place ensure that any potential issues are managed effectively. With a spillway width of 25 feet and a maximum discharge capacity of 200 cubic feet per second, the dam is well-equipped to handle any excess water and maintain the safety of the surrounding areas.
For water resource and climate enthusiasts, Dunn Lake Dam serves as a fascinating example of the intersection between infrastructure, environmental management, and public safety. With its blend of recreational and water supply purposes, the dam underscores the crucial role that such structures play in sustaining communities and ecosystems. As ongoing assessments and risk management efforts continue to ensure the dam's integrity, it stands as a testament to the ingenuity and foresight of those who designed and maintain it.
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 Dunn Lake Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Cuivre River Near Troy | 259 cfs | → |
| Missouri River At Hermann | 136,000 cfs | → |
| Dardenne Creek At Ofallon | 25 cfs | → |
| Dardenne Creek At Old Town St. Peters | 13 cfs | → |
| Bonhomme Creek Near Ellisville | 1 cfs | → |
| Bourbeuse River At Union | 574 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Dunn Lake Dam.
Boat launches
- Lakeside Trail Lincoln County
- Katy Trail Warren County
- Brittany Place 1, Lake Saint Louis
- Windjammer Point 200, Lake Saint Louis
- Buchheit Road 128, Franklin County
- Wharf Street 200, Hermann
Track Dunn 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 Dunn Lake Dam
Where does the data for Dunn 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 Dunn Lake Dam.