John S. Allen Dam dam
John S. Allen Dam
John S. Allen Dam, located in East Bend, North Carolina, along a tributary to the Yadkin River, was completed in 2006 with a primary purpose of irrigation. This earth dam stands at a hydraulic height of 24 feet and a structural height of 28 feet, with a length of 166 feet and a storage capacity of 26 acre-feet. Despite being classified as having a low hazard potential, the dam is regularly inspected and has been deemed to be in satisfactory condition as of the last assessment in 2013.
Managed by the Huntington District of the US Army Corps of Engineers, John S. Allen Dam plays a crucial role in providing water resources for agricultural irrigation in Forsyth County. The dam's surface area of 2.3 acres and its maximum discharge capacity are key factors in ensuring efficient water management and distribution for the surrounding areas. With no associated locks or spillways, the dam's design focuses primarily on its function in maintaining a reliable water supply for local farmers.
In the realm of water resource and climate conservation, John S. Allen Dam stands as a testament to effective infrastructure for sustainable water usage in North Carolina. With its strategic location and modern construction, this dam serves as a vital component in the region's irrigation network, showcasing how engineering can support both agricultural needs and environmental preservation.
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 John S. Allen Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Little Yadkin River At Dalton | 7 cfs | → |
| Yadkin River At Enon | 742 cfs | → |
| Ararat River At Ararat | 120 cfs | → |
| Fisher River Near Copeland | 177 cfs | → |
| Dan River Near Francisco | 65 cfs | → |
| Mitchell River Near State Road | 57 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near John S. Allen Dam.
Boat launches
- Campground Trail Yadkin County
- Belews Lake Drive 8191, Belews Creek
- Pine Hall Road 2547-2793, Walnut Cove
- Nc Highway 801 South 5877, Mocksville
- Lake Thom-A-Lex Park
Campgrounds
- Pilot Mountain State Park
- Ymca Camp Hanes
- Hanging Rock State Park
- Tanglewood Park
- Sunset Park Campground
- Camp Raven Knob
Fishing spots
Track John S. Allen 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 John S. Allen Dam
Where does the data for John S. Allen 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 John S. Allen Dam.