Dam Report

Southbridge Reservoir #5 Dam dam

Massachusetts, USA Hatchet Brook Hazard Significant
Today high
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Tonight low
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Dam height
33ft
Hazard rating
Significant
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Southbridge Reservoir #5 Dam -- None dam
Southbridge Reservoir #5 Dam None · Hatchet Brook
About this dam

Southbridge Reservoir #5 Dam

Southbridge Reservoir #5 Dam, located in Southbridge, Massachusetts, is a local government-owned structure regulated by the Department of Conservation and Recreation. Completed in 1938, this Earth dam serves the primary purpose of water supply for the area. With a height of 33 feet and a hydraulic height of 30 feet, the dam has a storage capacity of 610 acre-feet, providing essential water resources to the community.

The dam's spillway type is uncontrolled, with a width of 0 feet, and it is associated with the Hatchet Brook river. The dam's condition assessment in 2015 deemed it satisfactory, with a significant hazard potential. The risk assessment for the dam is moderate, indicating a need for ongoing monitoring and management measures to ensure its continued safety and functionality in the face of climate challenges and emergency situations.

Southbridge Reservoir #5 Dam plays a crucial role in water resource management in Worcester County, Massachusetts. With its historical significance and essential function in providing water supply, the dam represents a vital asset in the region's infrastructure. Climate enthusiasts and water resource experts can appreciate the dam's design and purpose in safeguarding water resources for the community while also recognizing the need for continued inspection and risk management to address potential hazards and ensure the dam's long-term resilience in the face of changing environmental conditions.

StateNone
River / streamHatchet Brook
NID IDMA00693
Owner typeLocal Government
Primary purposeWater Supply
Dam typeEarth
Year built1938
Dam height33 ft
Dam length1,130 ft
Max storage610 AF
Normal storage491 AF
Surface area30.2 ac
Drainage area1.2 sq mi
Hazard potentialSignificant
ConditionSatisfactory
Last inspectionThu, 09 Jul 2015 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 Southbridge Reservoir #5 Dam -- inflows here typically show up in storage 24-72 hours later.

Track Southbridge Reservoir #5 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 Southbridge Reservoir #5 Dam

Where does the data for Southbridge Reservoir #5 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 Significant 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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