Dam Report

Mount Higby Reservoir Dam dam

Connecticut, USA Fall Brook Hazard High
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Dam height
30ft
Hazard rating
High
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Mount Higby Reservoir Dam -- None dam
Mount Higby Reservoir Dam None · Fall Brook
About this dam

Mount Higby Reservoir Dam

Mount Higby Reservoir Dam, located in Middletown, Connecticut, stands as a testament to engineering excellence since its completion in 1897. This masonry dam, standing at a height of 30 feet and stretching 865 feet in length, serves as a crucial water supply facility for the area. With a maximum storage capacity of 1,734 acre-feet and a normal storage level of 1,177 acre-feet, the dam plays a vital role in managing the water resources of the region.

The dam, situated on Fall Brook, is regulated by the Connecticut Department of Energy and Environmental Protection (DEEP) and undergoes regular inspections to ensure its safety and structural integrity. Despite its high hazard potential, the dam has been assessed as satisfactory in condition, with the last inspection conducted in October 2020. The surrounding area, covering 134 acres, benefits from the water management and flood control provided by this historic structure.

As a key component of the local government's water infrastructure, Mount Higby Reservoir Dam not only safeguards the water supply but also contributes to the environmental sustainability of the region. With its rich history, impressive dimensions, and crucial role in water resource management, this dam is a site of interest for water resource and climate enthusiasts seeking to understand the intersection of engineering, nature, and water conservation.

StateNone
River / streamFall Brook
NID IDCT00140
Owner typeLocal Government
Primary purposeWater Supply
Dam typeMasonry
Year built1897
Dam height30 ft
Dam length865 ft
Max storage1,734 AF
Normal storage1,177 AF
Surface area134.0 ac
Drainage area1.4 sq mi
Hazard potentialHigh
ConditionSatisfactory
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 Mount Higby Reservoir Dam -- inflows here typically show up in storage 24-72 hours later.

Track Mount Higby 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 Mount Higby Reservoir Dam

Where does the data for Mount Higby 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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