Lee Anderson dam
Lee Anderson
Located in Lyman, South Dakota, the Lee Anderson dam stands as a testament to water resource management, with a height of 27 feet and a length of 370 feet. Completed in 1960, this earth dam serves to control the flow of the TR-MISSONot RatedI river or stream, with a maximum discharge capacity of 340 cubic feet per second. Owned privately, the dam is regulated by the South Dakota Department of Environment and Natural Resources, ensuring that it meets state permitting, inspection, and enforcement standards.
Managed by the Natural Resources Conservation Service, Lee Anderson dam has a low hazard potential and a condition assessment of "Not Rated." With a storage capacity of 16 acre-feet, the dam plays a crucial role in water storage and flood control in the area. Despite its age, the dam has not undergone any modifications in recent years, highlighting its sturdy construction and efficient operation. As climate change continues to impact water resources, dams like Lee Anderson will be vital in ensuring water security for communities in South Dakota.
The Lee Anderson dam serves as a vital infrastructure for water management in South Dakota, providing critical flood control and water storage capabilities. With its low hazard potential and state-regulated status, the dam is a reliable asset in the face of changing climate patterns. As water resource enthusiasts continue to advocate for sustainable water management practices, the Lee Anderson dam stands as a model for effective dam operation and maintenance in the region.
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 Lee Anderson -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| White R Near Oacoma Sd | 100 cfs | → |
| Bad R Near Fort Pierre Sd | 4 cfs | → |
| White River Near White River | 17 cfs | → |
| Little White R Below White River Sd | 107 cfs | → |
| Keya Paha R Near Keyapaha Sd | 23 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Lee Anderson.
Boat launches
- Joe Creek Boat Ramp
- Chaney Rush Road Hughes County
- Lyman County
- 312th Avenue Hughes County
- Oacoma
- East Glenn Avenue 309, Chamberlain
Campgrounds
- Byre Lake Recreation Area
- Iron Nation - Lake Sharpe
- West Bend State Rec Area - Pierre
- North Shore -Coe
- Left Tailrace - Lake Sharpe
- Right Tailrace - Coe
More reservoirs
Track Lee Anderson 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 Lee Anderson
Where does the data for Lee Anderson 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 Lee Anderson.