Muddy Fork Site 4 dam
Muddy Fork Site 4
Muddy Fork Site 4, also known as Prairie Grove Lake Dam, is a crucial structure owned by the local government in Prairie Grove, Arkansas. Built in 1967 by the USDA NRCS, this earth dam stands at a height of 78 feet and serves primarily for flood risk reduction. With a storage capacity of 4977 acre-feet and a surface area of 95 acres, this dam plays a vital role in managing water resources in the area.
Situated on Blair Creek in Washington County, Muddy Fork Site 4 has a drainage area of 7.9 square miles and a maximum discharge of 4418 cubic feet per second. The dam's spillway is uncontrolled, and it has a high hazard potential due to its location and structural characteristics. Although the condition assessment is not rated, the risk assessment indicates a moderate risk level (3), prompting the need for ongoing monitoring and maintenance to ensure its continued effectiveness in flood risk reduction and water supply management.
Overall, Muddy Fork Site 4 is a significant infrastructure project that highlights the importance of water resource management and climate resilience. With its strategic location, high hazard potential, and moderate risk level, this dam serves as a critical asset in safeguarding the community against potential flooding events. Continuous inspection, monitoring, and risk management measures are essential to ensure the long-term sustainability and functionality of this essential water resource facility.
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 Muddy Fork Site 4 -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Baron Fork At Dutch Mills | 6 cfs | → |
| Illinois River At Savoy | 117 cfs | → |
| Illinois River South Of Siloam Springs | 206 cfs | → |
| West Fork White River East Of Fayetteville | 78 cfs | → |
| Illinois River At Hwy. 16 Near Siloam Springs Ar | 454 cfs | → |
| White River Near Fayetteville | 1,230 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Muddy Fork Site 4.
Boat launches
- Lake Sequoyah Drive Fayetteville
- Lake Dam Cove Elm Springs
- Cripps Road Benton County
- Lake Atalanta Loop 140, Rogers
Campgrounds
- Lake Wedington Rec. Area
- Lake Wedington Recreation Area
- Devils Den State Park
- Adair State Park
- Lake Ft. Smith State Park
- Natural Falls State Park
Fishing spots
Track Muddy Fork Site 4 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 Muddy Fork Site 4
Where does the data for Muddy Fork Site 4 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 Muddy Fork Site 4.