Eisenhart Mill dam
Eisenhart Mill
Eisenhart Mill, located in Washington Township, Pennsylvania, is a privately owned concrete dam completed in 1919 on the Conewago Creek. With a height of 8 feet and a length of 200 feet, the dam serves primarily for recreation purposes, offering a surface area of 26 acres and a storage capacity of 52 acre-feet. The dam is regulated by the Pennsylvania Department of Environmental Protection and undergoes regular inspections, with a low hazard potential rating.
Despite its age, Eisenhart Mill remains a vital part of the local water resource infrastructure, providing a recreational area for residents and visitors to enjoy. The dam has not been rated for its condition, but it meets regulatory guidelines and is inspected every 5 years to ensure its safety and functionality. With Lloyd Smucker (R) as the representative for the area, the dam plays a crucial role in managing the Conewago Creek's flow and contributing to the overall water management efforts in York County.
As climate change continues to impact water resources and infrastructure, Eisenhart Mill stands as a testament to the resilience of these structures in adapting to changing environmental conditions. With its historical significance and recreational value, the dam serves as a reminder of the importance of sustainable water management practices and the need for ongoing monitoring and maintenance to ensure the safety and functionality of our water resources.
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 Eisenhart Mill -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| West Conewago Creek At East Berlin | 116 cfs | → |
| Codorus Creek At Spring Grove | 41 cfs | → |
| Bermudian Creek At Oxford Road Nr Heidlersburg | 6 cfs | → |
| Codorus Creek Near York | 200 cfs | → |
| Codorus Creek At Pleasureville | 208 cfs | → |
| West Conewago Creek Near Manchester | 143 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Eisenhart Mill.
Boat launches
- Pinchot State Park Campground
- Pinchot State Park - Boat Mooring #1
- Codorus State Park Mooring Cove
- Pinchot State Park - Boat Mooring #3
- Codorus State Park Hidden Cove
- Codorus State Park Smith Station Road
Campgrounds
- Camp Conewago - Boy Scouts Of America
- Pine Grove Furnace State Park
- Primitive Campsite #5
- Primitive Campsite #6
- Primitive Campsite #7
- Primitive Campsite #4
Fishing spots
More reservoirs
Track Eisenhart Mill 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 Eisenhart Mill
Where does the data for Eisenhart Mill 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 Eisenhart Mill.