Rapp Lake Dam dam
Rapp Lake Dam
Rapp Lake Dam, located in Boone, Missouri, is a privately owned structure that serves primarily as a Fish and Wildlife Pond. Built in 1968, this Earth-type dam stands at a height of 30 feet and has a length of 480 feet, with a storage capacity of 40 acre-feet. The dam sits on the TR-BLACK BRANCH stream and is managed under the jurisdiction of the St. Louis District.
With a low hazard potential and a moderate risk rating, Rapp Lake Dam is currently not rated for its condition assessment. Despite its uncontrolled spillway type and lack of outlet gates, the dam has not undergone recent inspections or maintenance evaluations. While it has not been subjected to state regulation, permitting, or enforcement, the dam remains an important structure for fire protection, recreation, and wildlife conservation in the region.
For water resource and climate enthusiasts, Rapp Lake Dam presents an intriguing case study of a privately owned dam with various purposes beyond flood control. Its location in a rural setting, lack of federal involvement, and unique design features make it a notable site for further exploration and monitoring. As the dam continues to serve the community for fish and wildlife management, its risk assessment and maintenance practices may warrant closer attention to ensure its long-term safety and effectiveness in the face of changing environmental 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 Rapp Lake Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Hinkson Creek At Columbia | 289 cfs | → |
| Moniteau Creek Near Fayette | 336 cfs | → |
| Missouri River At Boonville | 82,100 cfs | → |
| Missouri River At Jefferson City | 106,000 cfs | → |
| Missouri River At Glasgow | 68,400 cfs | → |
| Moreau River Near Jefferson City | 2,640 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Rapp Lake Dam.
Boat launches
- River Walkway Lupus
- Boone County
- South River Road Boone County
- Mo 179 Cole County
- Callaway County
- State Highway 41 Cooper County
Track Rapp 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 Rapp Lake Dam
Where does the data for Rapp 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 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 Rapp Lake Dam.