Cedar Hill Lake #1 Dam dam
Cedar Hill Lake #1 Dam
Cedar Hill Lake #1 Dam, located in Jefferson County, Missouri, was completed in 1949 and serves as a recreational area for water resource and climate enthusiasts. The dam, primarily made of earth with a buttress core, stands at a height of 35 feet and spans 600 feet in length. With a maximum storage capacity of 185 acre-feet, the dam provides essential water storage for the surrounding area, covering a surface area of 11 acres and draining a watershed of 294 acres.
Managed by a private owner, Cedar Hill Lake #1 Dam is regulated by the Dam and Reservoir Safety Program in Missouri, ensuring its safety and compliance with state inspection and enforcement protocols. The dam has a high hazard potential due to its proximity to Skullbones Creek, with a moderate risk assessment rating. Despite this, the dam's condition assessment in 2007 deemed it to be satisfactory, indicating its structural integrity and ability to withstand potential risks. The dam's emergency action plan was last revised in 2015, further enhancing its preparedness for any unforeseen events.
For water resource and climate enthusiasts, Cedar Hill Lake #1 Dam offers a picturesque setting for recreational activities while playing a crucial role in water storage and management in the region. With its historical significance and ongoing regulatory oversight, the dam stands as a testament to effective infrastructure management and environmental stewardship in the face of changing climate patterns.
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 Cedar Hill Lake #1 Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Big River At Byrnesville | 361 cfs | → |
| Meramec River At Pacific | 1,300 cfs | → |
| Meramec River Near Eureka | 1,770 cfs | → |
| Big River Near Richwoods | 346 cfs | → |
| Williams Creek Near Peerless Park | 8 cfs | → |
| Kiefer Creek Near Ballwin | 1 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Cedar Hill Lake #1 Dam.
Boat launches
- Ellis Grove Parkway Jefferson County
- Allen Road 204, Fenton
- Allen Road Fenton
- Williamson Road Oakville
- Lemay Ferry Road Oakville
- Grand Glaize Pkwy 1084, Valley Park
Campgrounds
- Robertsville State Park
- Washington State Park
- Klondike County Park
- Babler Memorial State Park
- Backpack Camp 8
- St. Francois State Park
Paddle runs
Track Cedar Hill Lake #1 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 Cedar Hill Lake #1 Dam
Where does the data for Cedar Hill Lake #1 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 Cedar Hill Lake #1 Dam.