Ligonier Reservoir dam
Ligonier Reservoir
Ligonier Reservoir, located in Westmoreland, Pennsylvania, is a crucial water supply dam constructed in 1954 on the South Fork Mill Creek. Owned by the local government, the reservoir is regulated by the Pennsylvania Department of Environmental Protection and undergoes regular inspections to ensure its structural integrity and adherence to state regulations. With a dam height of 35 feet and a storage capacity of 64 acre-feet, the reservoir serves as a vital source of water for the surrounding community.
Despite its fair condition assessment and high hazard potential, Ligonier Reservoir continues to provide a reliable water supply for the region. With a storage capacity of 45 acre-feet for normal operations, the reservoir covers a surface area of 5 acres and drains an area of 2.46 square miles. While the dam type is listed as Earth with a Buttress core, specific details regarding spillway type and maximum discharge are not readily available. Overall, Ligonier Reservoir stands as a testament to efficient water resource management and serves as a cornerstone for water supply infrastructure in the area.
As a key component of Ligonier Township's water supply infrastructure, Ligonier Reservoir plays a crucial role in meeting the water needs of the community. The reservoir's location and design ensure efficient water storage and distribution, with a focus on maintaining water quality and meeting regulatory standards. Despite its age, the reservoir continues to function effectively, highlighting the importance of ongoing monitoring and maintenance to ensure the long-term sustainability of water resources 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 Ligonier Reservoir -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Linn Run At Linn Run State Park Near Rector | 9 cfs | → |
| Loyalhanna Creek At Kingston | 115 cfs | → |
| Stonycreek River At Ferndale | 261 cfs | → |
| Conemaugh River At Minersville | 565 cfs | → |
| Conemaugh River At Seward | 503 cfs | → |
| Little Conemaugh River At East Conemaugh | 97 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Ligonier Reservoir.
Boat launches
Campgrounds
- Camp Ligonier
- Antiochian Village Camp
- Quemahoning Family Rec Area
- Kooser State Park
- Lorain Borough Park
- Keystone State Park
Fishing spots
Paddle runs
Track Ligonier Reservoir 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 Ligonier Reservoir
Where does the data for Ligonier Reservoir 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 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 Ligonier Reservoir.