Dam Report

Farnsworth dam

Maine, USA Sabattus River Hazard Low
Today high
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Tonight low
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Dam height
13ft
Hazard rating
Low
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Farnsworth -- None dam
Farnsworth None · Sabattus River
About this dam

Farnsworth

Farnsworth, located in Androscoggin, Maine, is a private dam on the Sabattus River with a history dating back to its completion in 1850. This concrete gravity dam stands at 13 feet high and spans 134 feet in length, providing storage of 204 acre-feet of water for a drainage area of 70 square miles. Despite its age, the dam has a low hazard potential but is currently in poor condition, with a condition assessment conducted in 2012.

The state of Maine regulates Farnsworth, with permitting, inspection, and enforcement all conducted by the Maine Emergency Management Agency (MEMA). While the dam has not been modified in recent years, it is important to note its location within a sensitive watershed and the potential impact its failure could have on downstream communities. With its unique design and historical significance, Farnsworth serves as a reminder of the importance of maintaining and monitoring aging infrastructure for water resource and climate enthusiasts.

As climate change continues to impact water resources and infrastructure, the condition of dams like Farnsworth becomes increasingly critical. Understanding the risks associated with aging dams and implementing adequate risk management measures will be essential in ensuring the safety and sustainability of these structures in the face of changing environmental conditions. Farnsworth stands as a testament to the intersection of history, engineering, and environmental stewardship, serving as a focal point for ongoing discussions and actions to safeguard our water resources for future generations.

StateNone
River / streamSabattus River
NID IDME00343
Owner typePrivate
Primary purposeOther
Dam typeConcrete
Year built1850
Dam height13 ft
Dam length134 ft
Max storage204 AF
Normal storage108 AF
Surface area24.0 ac
Drainage area70.0 sq mi
Hazard potentialLow
ConditionPoor

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 Farnsworth -- inflows here typically show up in storage 24-72 hours later.

Track Farnsworth 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 Farnsworth

Where does the data for Farnsworth 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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