Walnut Lake Dam dam
Walnut Lake Dam
Walnut Lake Dam, located in McArthur, Arkansas, was completed in 1960 and is owned by a private entity. The dam, designed by the USDA NRCS, serves a primary purpose of recreation, with a height of 10 feet and a hydraulic height of 7 feet. It spans 75 feet in length and has a storage capacity of 61 acre-feet. The dam is situated on Canal No 19-TR, within the Desha County area of Arkansas.
Despite being privately owned, Walnut Lake Dam is not regulated by the state and does not require permitting, inspection, or enforcement. The dam is classified as having a low hazard potential and is currently rated as "Not Rated" in terms of its overall condition assessment. While there is no Emergency Action Plan (EAP) in place for the dam, it meets guidelines and has not undergone any recent risk assessment or management measures.
Water resource and climate enthusiasts may find Walnut Lake Dam to be an interesting case study, as it represents a privately owned recreational structure designed to serve the local community. The dam's location on Canal No 19-TR in Desha County, Arkansas, adds to its significance within the region. With its low hazard potential and lack of recent inspections or assessments, there may be opportunities for further research and evaluation of its current condition and potential risks 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 Walnut Lake Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Bayou Bartholomew At Garrett Bridge | 22 cfs | → |
| Bayou Bartholomew Near Mcgehee | 74 cfs | → |
| Saline River Near Rye | 1,860 cfs | → |
| Bayou Bartholomew Near Portland | 107 cfs | → |
| Big Sunflower River Nr Merigold | 281 cfs | → |
| Bogue Phalia Nr Leland | 9 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Walnut Lake Dam.
⚓ Boat launches
- Tedford Island Road Arkansas County
- Harris Road Drew County
- Hunger Run East Drew County
- Lake Road Bolivar County
⛺ Campgrounds
- Pendleton Bend
- Wilbur D Mills
- Notrebes Bend
- Merrisach Lake Park - Merrisach Lake
- Cane Creek State Park
- Great River Road State Park
🎣 Fishing spots
More fishing →Track Walnut 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 Walnut Lake Dam
Where does the data for Walnut 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 Walnut Lake Dam.