Dam Report

Morris Reservoir Dam dam

Connecticut, USA Branch Brook Hazard High
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Dam height
88ft
Hazard rating
High
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Morris Reservoir Dam -- None dam
Morris Reservoir Dam None · Branch Brook
About this dam

Morris Reservoir Dam

Morris Reservoir Dam, located in Morris, Connecticut, serves as a crucial water supply facility managed by a public utility. The dam stands at a height of 88 feet and has a length of 810 feet, providing a storage capacity of 4590 acre-feet for the surrounding area. The reservoir created by the dam covers a surface area of 135 acres and is fed by Branch Brook, catering to the water needs of the region.

Constructed with a concrete core in a multi-arch design, Morris Reservoir Dam is regulated and inspected by the Connecticut Department of Energy and Environmental Protection (DEEP) to ensure its structural integrity and operational safety. The dam features an uncontrolled spillway with a width of 200 feet, maintaining a high hazard potential due to its size and the volume of water it holds. Despite this, the dam is currently assessed as being in satisfactory condition, with a moderate risk rating, indicating effective risk management measures in place.

As a critical infrastructure for water supply in Litchfield County, Morris Reservoir Dam plays a vital role in ensuring water security for the region. With its efficient operational protocols and adherence to regulatory standards, the dam stands as a testament to responsible water resource management in the face of climate challenges. For water resource and climate enthusiasts, Morris Reservoir Dam represents a blend of engineering excellence, environmental stewardship, and proactive risk management in safeguarding precious water resources for the community.

StateNone
River / streamBranch Brook
NID IDCT00473
Owner typePublic Utility
Primary purposeWater Supply
Dam typeConcrete
Dam height88 ft
Dam length810 ft
Normal storage4,590 AF
Surface area135.0 ac
Drainage area8.5 sq mi
Hazard potentialHigh
ConditionSatisfactory
Last inspectionFri, 23 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 Morris Reservoir Dam -- inflows here typically show up in storage 24-72 hours later.

Track Morris Reservoir 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 Morris Reservoir Dam

Where does the data for Morris Reservoir 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 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.

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