Dam Report

Emerald No. 1 Back Valley Western dam

Pennsylvania, USA Tr Tenmile Creek Hazard High
Today high
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Tonight low
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Dam height
90ft
Hazard rating
High
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Emerald No. 1 Back Valley Western -- None dam
Emerald No. 1 Back Valley Western None · Tr Tenmile Creek
About this dam

Emerald No. 1 Back Valley Western

Emerald No. 1 Back Valley Western is a privately owned dam located in Franklin Township, Greene County, Pennsylvania. This Earth-type dam stands at a height of 90 feet and spans 750 feet along TR Tenmile Creek, with a storage capacity of 58.2 acre-feet. The dam is regulated by the Pennsylvania Department of Environmental Protection and undergoes regular inspections to ensure its structural integrity.

With a high hazard potential, Emerald No. 1 Back Valley Western is crucial for water resource management in the region. Despite its satisfactory condition assessment, the dam's emergency action plan status and risk assessment measures are currently undisclosed. The dam plays a vital role in flood control and water storage, highlighting the importance of proper maintenance and oversight to mitigate any potential risks associated with its operation.

As a key structure in the local water infrastructure, Emerald No. 1 Back Valley Western underscores the intersection of water resource management and climate resilience. With its strategic location along TR Tenmile Creek and its significant storage capacity, this dam serves as a critical asset for flood prevention and water supply. Continued monitoring and maintenance efforts are essential to ensure the long-term safety and effectiveness of this vital water resource infrastructure in Greene County, Pennsylvania.

StateNone
River / streamTr Tenmile Creek
NID IDPA01760
Owner typePrivate
Primary purposeOther
Dam typeEarth
Dam height90 ft
Dam length750 ft
Max storage58 AF
Drainage area0.1 sq mi
Hazard potentialHigh
ConditionSatisfactory
Last inspectionFri, 19 Mar 2021 00:00:00 GMT

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.
Detailed forecast

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.

Hourly detail

Next 5 days, hour by hour

Temperature line with weather symbols on top, snow + rain accumulation as columns, humidity as a dotted line.

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Deep dive

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.

TimeConditionTemp (°F)Snow (in)Rain (in)Humidity (%)Wind (mps)Wind dir
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Long-term outlook

15-day temperature & precipitation

Daily temperatures, snow, and rain projected over the next two weeks.

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Regional inflow

Nearby streamflow gauges

USGS streamgauges around Emerald No. 1 Back Valley Western -- inflows here typically show up in storage 24-72 hours later.

Track Emerald No. 1 Back Valley Western 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.

FAQ

About Emerald No. 1 Back Valley Western

Where does the data for Emerald No. 1 Back Valley Western 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.