Slurry Impoundment 401 Dam
Slurry Impoundment 401
Slurry Impoundment 401, also known as Skyline Refuse Impoundment, is a private water supply facility located in Evanston, Kentucky. This earth dam structure stands at a height of 280 feet and spans a length of 910 feet, providing a storage capacity of 3,143 acre-feet. Despite not being regulated by the state, the Mine Safety and Health Administration oversees inspections of this high-hazard potential site.
With a primary purpose of water supply, Slurry Impoundment 401 serves as a vital resource in the region. While the exact year of completion is unknown, the facility's critical role in tailings and water supply management underscores its significance in supporting local communities. Although lacking specific data on condition assessment and emergency preparedness, the structure's strategic location and design contribute to its essential role in water resource management.
For water resource and climate enthusiasts, Slurry Impoundment 401 represents a key component of the region's infrastructure for water supply. The facility's high hazard potential highlights the importance of regular inspection and monitoring to ensure the safety and integrity of the dam structure. As an essential resource in the area, continued attention to risk management measures and emergency preparedness is crucial to safeguarding the surrounding environment and communities that rely on this crucial water supply facility.
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 Slurry Impoundment 401 -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Licking River Below Mason Fork Nr Salyersville | 41 cfs | → |
| North Fork Kentucky River At Jackson | 297 cfs | → |
| North Fork Kentucky River At Hazard | 55 cfs | → |
| Levisa Fork At Paintsville | 553 cfs | → |
| Red River Near Hazel Green | 18 cfs | → |
| Levisa Fork At Pikeville | 214 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Slurry Impoundment 401.
Boat launches
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Campgrounds
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Fishing spots
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River runs
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About Slurry Impoundment 401
Where does the data for Slurry Impoundment 401 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 below 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.
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.