Patterson Creek No.27 Dam
Patterson Creek No.27
Patterson Creek No.27, also known as Larenin Park Lake #27, is a flood risk reduction structure located in Mineral, West Virginia. Built in 1970 by the USDA NRCS, this earth dam stands at a height of 39 feet and has a hydraulic height of 32 feet. With a storage capacity of 297 acre-feet, it serves the primary purpose of flood risk reduction along the Patterson Creek.
Managed by the local government and regulated by the West Virginia Department of Environmental Protection, Patterson Creek No.27 has a fair condition assessment and a high hazard potential. Despite its moderate risk assessment rating, the dam has not undergone any major modifications since its completion. The dam's spillway type is uncontrolled, and it has an uncontrolled outlet gate.
Water resource and climate enthusiasts will find Patterson Creek No.27 to be an interesting case study in flood risk reduction infrastructure in West Virginia. Its location in the Pittsburgh District, along with its stone core and rock and soil foundations, make it a notable structure in the region. With its history of construction and maintenance, this dam serves as a critical component in managing water resources and mitigating flood risks in the area.
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 Patterson Creek No.27 -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Patterson Creek Near Headsville | 26 cfs | → |
| Georges Creek At Franklin | 16 cfs | → |
| North Branch Potomac River At Luke | 372 cfs | → |
| South Branch Potomac River Near Springfield | 411 cfs | → |
| North Branch Potomac River At Barnum | 288 cfs | → |
| Savage Riv Bl Savage Riv Dam Near Bloomington | 63 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Patterson Creek No.27.
Boat launches
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Campgrounds
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Fishing spots
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River runs
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About Patterson Creek No.27
Where does the data for Patterson Creek No.27 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.