Wolfner Dam dam
Wolfner Dam
Wolfner Dam, located in Defiance, Missouri, is a private earth dam completed in 1981 primarily for recreational purposes. Standing at 25 feet tall with a storage capacity of 60 acre-feet, the dam spans a drainage area of 350 acres and provides a surface area of 5 acres for water enthusiasts to enjoy. With a low hazard potential and a condition assessment of "Not Rated," Wolfner Dam offers a safe and inviting environment for visitors seeking outdoor recreation opportunities.
Situated along a tributary to the Little Femme Osage Creek, Wolfner Dam is owned privately and not regulated by the state. Despite its modest height and storage capacity, the dam serves as a vital resource for the local community, offering a tranquil setting for fishing, boating, and other water-based activities. With its designer and federal agency information not listed, Wolfner Dam remains a hidden gem for water resource and climate enthusiasts looking to explore Missouri's diverse landscape.
Maintaining its structural integrity with regular inspections, Wolfner Dam has not faced any significant modifications or emergencies since its completion. Although its emergency action plan and risk management measures are not explicitly documented, the dam's low hazard potential suggests a minimal likelihood of any safety concerns. As a key feature in the Kansas City District, Wolfner Dam stands as a testament to the importance of private initiatives in providing sustainable water resources for recreational use in the heart of St. Charles County.
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 Wolfner 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 | → |
| Bonhomme Creek Near Clarkson Valley | 6 cfs | → |
| Caulks Creek At Chesterfield | 23 cfs | → |
| Dardenne Creek At Old Town St. Peters | 37 cfs | → |
| Creve Couer Creek At Chesterfield | 2 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Wolfner Dam.
Boat launches
- Katy Trail 1800, Saint Charles County
- Brittany Place 1, Lake Saint Louis
- Windjammer Point 200, Lake Saint Louis
- Scott A Lewis Lane Cottleville
- Downtown Washington
- Lakeside Park Trail Saint Peters
Campgrounds
- Babler Memorial State Park
- Klondike County Park
- St. Peters 370 Lakeside Park
- Robertsville State Park
- Pere Marquette State Park
- Cuivre River State Park
Paddle runs
Track Wolfner 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 Wolfner Dam
Where does the data for Wolfner 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 Low 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 Wolfner Dam.