Stevens Lake Dam dam
Stevens Lake Dam
Stevens Lake Dam in Hannibal, Missouri, is a privately owned structure completed in 1963 primarily for recreational purposes. The dam, with a height of 36 feet and a length of 300 feet, impounds the waters of TR South River, creating an 8-acre lake with a storage capacity of 107 acre-feet. Despite not being regulated or inspected by state agencies, the dam is classified as having a high hazard potential, indicating the potential risk of failure and downstream flooding.
Located in Marion County, Missouri, Stevens Lake Dam is under the jurisdiction of the Rock Island District of the US Army Corps of Engineers. The dam, constructed as an earth structure with a buttress core, remains in good condition despite not having a recent condition assessment. With a maximum discharge of 80 cubic feet per second, the dam poses a potential risk to downstream communities in the event of failure, underscoring the importance of regular inspections and maintenance to ensure public safety.
While the dam lacks an Emergency Action Plan and up-to-date inundation maps, it is essential for the owners to address these deficiencies to mitigate potential risks and plan for emergency response in case of a dam failure. As water resource and climate enthusiasts, it is crucial to monitor the condition of dams like Stevens Lake Dam to safeguard against potential disasters and ensure the sustainable management of our water resources in the face of changing climate conditions.
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 Stevens Lake Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| North River At Palmyra | 6 cfs | → |
| Bear Creek At Hannibal | 1 cfs | → |
| South Fabius River Near Taylor | 36 cfs | → |
| Salt River Near New London | 1,340 cfs | → |
| Salt River Near Center | 1,620 cfs | → |
| Spencer Cr. Bl Plum Cr. Nr Frankford | 44 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Stevens Lake Dam.
Track Stevens 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 Stevens Lake Dam
Where does the data for Stevens 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 Stevens Lake Dam.