Dam Report

Chalker dam

Pennsylvania, USA Tr Forest Lake Creek Hazard High
Today high
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Tonight low
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Dam height
21ft
Hazard rating
High
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Chalker -- None dam
Chalker None · Tr Forest Lake Creek
About this dam

Chalker

Chalker is a private water resource located in Forest Lake Township, Pennsylvania. Managed by the Pennsylvania Department of Environmental Protection, this dam was completed in 1984 with a primary purpose of recreation. With a height of 21 feet and a length of 900 feet, Chalker provides a storage capacity of 100 acre-feet and covers a surface area of 6 acres, serving a drainage area of 0.1 square miles.

Despite its satisfactory condition assessment, Chalker poses a high hazard potential. The dam has a regular inspection frequency and was last assessed in October 2020. While emergency action plans and risk assessment details are currently unavailable, the dam's satisfactory condition reflects ongoing efforts to ensure public safety and environmental protection. Overall, Chalker serves as a vital water resource in Susquehanna County, Pennsylvania, contributing to the region's recreational activities and water management efforts.

As a significant earth dam in the Baltimore District, Chalker plays a crucial role in regulating the flow of the TR FOREST LAKE CREEK. With its location in Forest Lake Township and proximity to major water bodies, the dam's operation and maintenance are closely monitored by state regulatory agencies. Enthusiasts of water resources and climate change can appreciate Chalker's contribution to the local ecosystem and its importance in ensuring sustainable water management practices in the region.

StateNone
River / streamTr Forest Lake Creek
NID IDPA01208
Owner typePrivate
Primary purposeRecreation
Dam typeEarth
Year built1984
Dam height21 ft
Dam length900 ft
Max storage100 AF
Normal storage43 AF
Surface area6.0 ac
Drainage area0.1 sq mi
Hazard potentialHigh
ConditionSatisfactory
Last inspectionMon, 26 Oct 2020 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 Chalker -- inflows here typically show up in storage 24-72 hours later.

Track Chalker 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 Chalker

Where does the data for Chalker 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.