Toland Mine dam
Toland Mine
Toland Mine, located in Dickinson Township, Cumberland County, Pennsylvania, is a privately owned earth dam primarily used for tailings storage. Completed in 1981, the dam stands at a height of 28 feet and spans a length of 400 feet, with a storage capacity of 85 acre-feet. Situated on TR Mountain Creek, the dam covers a surface area of 5.2 acres and drains a watershed area of 0.23 square miles.
Managed and regulated by the Pennsylvania Department of Environmental Protection, Toland Mine has a low hazard potential and a condition assessment that is currently not rated. The dam has not been modified in recent years and undergoes inspections every five years. Although the emergency action plan status and risk assessment information are not provided, the dam is in compliance with state permitting, inspection, and enforcement requirements.
Water resource and climate enthusiasts interested in the infrastructure and management of dams will find Toland Mine to be an intriguing case study. With its unique design features, purpose, and regulatory oversight, this earth dam serves as a critical component in managing tailings and water resources in the region. Further research into the dam's risk mitigation measures, emergency preparedness, and potential environmental impacts could provide valuable insights for sustainable water resource management practices.
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 Toland Mine -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Mountain Creek Near Pine Grove Furnace | 9 cfs | → |
| Bermudian Creek At Oxford Road Nr Heidlersburg | 4 cfs | → |
| West Conewago Creek At East Berlin | 53 cfs | → |
| Conodoguinet Creek Near Hogestown | 178 cfs | → |
| Sherman Creek At Shermans Dale | 75 cfs | → |
| Yellow Breeches Creek Near Camp Hill | 136 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Toland Mine.
Boat launches
- Laurel Lake Boat Launch
- Childrens Lake B.L.
- North Middleton Park
- Opossum Lake Bl #1
- Opossum Lake Bl #2
- Letort Falls Park
Campgrounds
- Pine Grove Furnace State Park
- Primitive Campsite #6
- Primitive Campsite #5
- Primitive Campsite #4
- Primitive Campsite #7
- Primitive Campsite #8
Fishing spots
- Melagos Fising Spot
- Little Owens Creek
- Hunting Creek Lake
- Blairs Valley Lake
- Culler Lake
- Potomac River Reservoir
More reservoirs
Track Toland Mine 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 Toland Mine
Where does the data for Toland Mine 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 Toland Mine.