Dam Report

Clark Pond East Dam dam

New Hampshire, USA Clark Pond Brook Hazard Low
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Tonight low
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Dam height
8ft
Hazard rating
Low
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Clark Pond East Dam -- None dam
Clark Pond East Dam None · Clark Pond Brook
About this dam

Clark Pond East Dam

Clark Pond East Dam, located in Auburn, New Hampshire, stands as a testament to water resource management, with a primary purpose of providing water supply. Built in 1811, this earth dam with a buttress core spans 125 feet in length and reaches a height of 7.5 feet, offering a storage capacity of 100 acre-feet. The dam regulates Clark Pond Brook, covering a surface area of 40 acres and draining a 14.5-square-mile watershed.

State-regulated by the NHDES Dam Bureau, this dam is subject to regular inspections and enforcement to ensure its structural integrity and the safety of surrounding communities. While categorized with a low hazard potential, the dam's condition assessment is rated as fair, and a moderate risk assessment (3) has been identified. Despite these challenges, Clark Pond East Dam remains a vital asset for water supply in the region, highlighting the importance of proactive risk management and emergency preparedness for sustainable water resource utilization.

As a cornerstone of local government infrastructure, Clark Pond East Dam serves as a critical component in the water supply network of Rockingham County. With a history dating back over two centuries, this dam symbolizes the ongoing efforts to balance water resource management and climate resilience. As enthusiasts in these fields continue to monitor and assess the dam's condition, collaborative efforts with regulatory agencies and stakeholders are essential to ensure the long-term sustainability and safety of this essential water infrastructure.

StateNone
River / streamClark Pond Brook
NID IDNH00227
Owner typeLocal Government
Primary purposeWater Supply
Dam typeEarth
Year built1811
Dam height8 ft
Dam length125 ft
Max storage100 AF
Normal storage80 AF
Surface area40.0 ac
Drainage area14.5 sq mi
Hazard potentialLow
ConditionFair
Last inspectionThu, 08 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 Clark Pond East Dam -- inflows here typically show up in storage 24-72 hours later.

Track Clark Pond East Dam 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 Clark Pond East Dam

Where does the data for Clark Pond East Dam 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.

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