Stony Run dam
Stony Run
Stony Run is a state-regulated earth dam located in Hartley Township, Union County, Pennsylvania, specifically designed for water supply purposes. Standing at a height of 39 feet and stretching 230 feet in length, this dam serves to store and distribute water for the surrounding area. The dam has a normal storage capacity of 26 acre-feet and a maximum storage of 34 acre-feet, covering a surface area of 3 acres with a drainage area of 1.25 square miles.
Managed by the Pennsylvania Department of Environmental Protection, Stony Run poses a significant hazard potential and undergoes inspections every two years, with the last assessment conducted in January 2014. While the condition assessment remains unrated, the dam's emergency action plan status, risk assessment, and inundation maps readiness are unspecified. This structure plays a crucial role in securing water resources for the region, highlighting the importance of efficient maintenance and monitoring to ensure its safety and functionality in the face of changing climate conditions and water demands.
As water resource and climate enthusiasts, understanding and advocating for the proper management of infrastructure like Stony Run is essential for sustainable water supply and climate resilience. By staying informed about the dam's characteristics, regulatory oversight, and emergency preparedness, stakeholders can contribute to safeguarding this critical water resource and promoting effective water management practices to address the challenges posed by a changing climate.
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 Stony Run -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Penns Creek At Penns Creek | 235 cfs | → |
| West Branch Susquehanna River At Lewisburg | 6,770 cfs | → |
| Wb Susquehanna River At Lock Haven | 3,430 cfs | → |
| Wb Susquehanna River At Jersey Shore | 5,490 cfs | → |
| Bald Eagle Creek Near Beech Creek Station | 433 cfs | → |
| West Branch Susquehanna River At Allenwood | 6,980 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Stony Run.
Boat launches
Paddle runs
Track Stony Run 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 Stony Run
Where does the data for Stony Run 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 Significant 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 Stony Run.