Emerald No. 1 Main Valley Eastern dam
Emerald No. 1 Main Valley Eastern
Emerald No. 1 Main Valley Eastern is a private dam located in Franklin Township, Greene County, Pennsylvania. This earth dam has a height of 310 feet and a length of 2010 feet, providing a storage capacity of 2734 acre-feet. It is regulated by the Pennsylvania Department of Environmental Protection and inspected by the Mine Safety and Health Administration. The dam is situated on TR Smith Creek and serves a primary purpose that is classified as "Other."
With a hazard potential rated as high, the condition assessment of Emerald No. 1 Main Valley Eastern has been deemed satisfactory. The last inspection took place in November 2019, with a frequency of one inspection per year. While the dam meets guidelines for emergency action plans, specific details about its risk assessment, management measures, and inundation maps are currently unavailable. The dam is not under the jurisdiction of the U.S. Army Corps of Engineers.
For water resource and climate enthusiasts, Emerald No. 1 Main Valley Eastern presents an intriguing case study in dam safety and regulation. Its significant height and storage capacity, combined with its location in a high-risk area, emphasize the importance of regular inspections and maintenance to ensure public safety and environmental protection. As climate change leads to more frequent and severe weather events, the resilience of dams like Emerald No. 1 Main Valley Eastern will be crucial in managing water resources sustainably.
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 Emerald No. 1 Main Valley Eastern -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| South Fork Tenmile Creek At Jefferson | 69 cfs | → |
| Dunkard Creek At Shannopin | 76 cfs | → |
| Monongahela River Near Masontown | 1,550 cfs | → |
| Deckers Creek At Morgantown | 48 cfs | → |
| Redstone Creek At Waltersburg | 203 cfs | → |
| Buffalo Creek At Barrackville | 73 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Emerald No. 1 Main Valley Eastern.
Boat launches
Campgrounds
- Mason - Dixon Historical Park
- Chestnut Ridge Regional Park
- Coopers Rock State Forest
- Cedar Creek Trekker Campground
Fishing spots
- Bruceton Mills Public Fishing Area
- Belmot Lake
- Belmont Lake
- Deep Creek Lake
- Barnesville Reservoir Number Three
- Snowy Creek
Track Emerald No. 1 Main Valley Eastern 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 Emerald No. 1 Main Valley Eastern
Where does the data for Emerald No. 1 Main Valley Eastern 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 Emerald No. 1 Main Valley Eastern.