Cedar Grove Dam dam
Cedar Grove Dam
Cedar Grove Dam, located in New Haven, Missouri, is a private-owned structure primarily used for recreation purposes. Built in 1965, this Earth-type dam stands at a height of 32 feet and has a storage capacity of 599 acre-feet. Situated on the TR-LOST CREEK river, the dam covers a surface area of 35 acres and serves a drainage area of 28 square miles.
With a hazard potential rated as high, Cedar Grove Dam has not been inspected since June 1980 and its condition is currently not rated. Despite being a privately owned structure, the dam does not fall under state regulation, permitting, inspection, or enforcement. It is also not under the jurisdiction of any federal agency, making its maintenance and safety responsibilities solely the responsibility of its private owners.
Despite its potential risks, Cedar Grove Dam remains a popular spot for recreation in Warren County, Missouri. The dam's location, surrounded by picturesque landscapes, offers visitors a peaceful setting for fishing, boating, and other outdoor activities. However, with its last inspection dating back to 1980, there may be concerns surrounding the safety and maintenance of this important water resource for the local community.
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 Grove Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Missouri River At Hermann | 133,000 cfs | → |
| Cuivre River Near Troy | 1,170 cfs | → |
| Bourbeuse River At Union | 329 cfs | → |
| Dardenne Creek At Ofallon | 185 cfs | → |
| Dardenne Creek At Old Town St. Peters | 389 cfs | → |
| Bonhomme Creek Near Ellisville | 3 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Cedar Grove Dam.
Boat launches
- Katy Trail Warren County
- Buchheit Road 128, Franklin County
- Wharf Street 200, Hermann
- Downtown Washington
- Gasconade
- Brittany Place 1, Lake Saint Louis
Campgrounds
- Hermann City Rv Park
- Camp Trinity
- Graham Cave State Park
- Camping @ Graham Cave State Park
- Cuivre River State Park
- Klondike County Park
Paddle runs
Track Cedar Grove 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 Grove Dam
Where does the data for Cedar Grove 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 Grove Dam.