Bagnell dam
Bagnell
Bagnell Dam, located in Miller County, Missouri, is a gravity dam that was completed in 1931 for the primary purpose of hydroelectric power generation. With a height of 148 feet and a length of 2543 feet, Bagnell Dam holds a storage capacity of 2,677,000 acre-feet of water, making it a significant structure in the region. The dam sits on the Osage River and serves multiple functions, including flood risk reduction, recreation, and of course, generating hydroelectric power.
Managed by the Federal Energy Regulatory Commission, Bagnell Dam has a controlled spillway with a width of 520 feet and 12 Tainter (radial) outlet gates. The dam's high hazard potential and very high risk assessment underline the importance of its upkeep and maintenance to ensure the safety of surrounding communities and the integrity of the structure. Despite not being regulated by the state, Bagnell Dam plays a crucial role in managing water resources and climate considerations in the area, reflecting the intricate balance between human development and environmental conservation.
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 Bagnell -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Osage River Near Bagnell | 13,700 cfs | → |
| Niangua River At Tunnel Dam Near Macks Creek | 396 cfs | → |
| Osage River Below St. Thomas | 18,300 cfs | → |
| Gasconade River Near Hazelgreen | 381 cfs | → |
| Moreau River Near Jefferson City | 110 cfs | → |
| Missouri River At Jefferson City | 51,500 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Bagnell .
Boat launches
- Bagnell Dam Access Boat Ramp
- Chaney Road Lake Ozark
- Bluebird 17, Lake Ozark
- Us 54 Osage Beach
- Miller County
- Pa He Tsi Boat Launch
Campgrounds
- Lake Of The Ozarks Military
- Lake Of The Ozarks State Park
- Versailles City Park
- Ho-Humm Canoe Rental & Campground
Track Bagnell 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 Bagnell
Where does the data for Bagnell 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 Bagnell .