Nepaug Dam Quick Facts
Nepaug Dam Map
Nepaug Dam Information
Nepaug Dam is a concrete earth dam located about 2 miles from Collinsville, Litchfield, Connecticut.
The dam, which is on the Nepaug River, was primarily built for Water Supply purposes, but also serves for benefits.
The dam was designed by and commissioned in 1918 and is currently owned by METROPOLITAN DISTRICT COMMISSION.
Nepaug Dam Structure
The Nepaug Dam is approximately 650 feet (198 m) long, 113 feet (34 m) high and has a structural volume of 0 cubic yards (0 cubic metres).
Nepaug Dam Storage Capacity & Surface Area
The reservoir has a normal storage capacity of 29,300 acre-ft (36,141 Ml) and maximum capacity of 40,540 acre-ft (50,005 Ml).
The surface area of the reservoir is 850 acres (344 ha) and the total catchment area is 32 square miles (83 square kilometres).
Nepaug Dam Spillway
The dam has a 175 feet (53 m) wide uncontrolled spillway with a maximum discharge capacity of 7200 cubic feet per second (204 cubic metres per second).
Nepaug Dam Compared to Five Famous American Dams
Nepaug Dam Weather
Current Conditions at Nepaug Dam
| Parameter | Value |
|---|---|
| Current Time | 00:13 |
| Sunrise | 07:05 |
| Sunset | 18:08 |
| Temperature (°F) | 37 |
| Feels Like (°F) | 35 |
| Cloud Coverage (%) | 6 |
| Pressure (inHg) | 1012 |
| Humidity (%) | 92 |
| Wind Speed (mph) | 3 |
| Rain (mm) | 0 |
7-Day Forecast for Nepaug Dam
| Day | Min Temp (°F) | Max Temp (°F) | Feels Like (°F) | Pressure (inHg) | Humidity (%) | Wind Speed (mph) | Wind Gust (mph) | Wind Dir | Precip Prob (%) | Precip Volume (mm) | Weather |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Today | 37 | 50 | 43 | 1017 | 51 | 12 | 25 | NW | 0 | - |  |
| Thu | 33 | 57 | 49 | 1024 | 45 | 7 | 18 | NE | 0 | - |  |
| Fri | 38 | 63 | 56 | 1031 | 33 | 9 | 20 | NNE | 0 | - | |
| Sat | 43 | 69 | 59 | 1035 | 41 | 4 | 5 | WNW | 0 | - | |
| Sun | 47 | 72 | 63 | 1028 | 34 | 5 | 11 | NW | 0 | - | |
| Mon | 48 | 74 | 65 | 1027 | 41 | 4 | 4 | WNW | 0 | - | |
| Tue | 50 | 72 | 65 | 1024 | 37 | 7 | 16 | SW | 0 | - | |
| Wed | 51 | 71 | 67 | 1016 | 47 | 9 | 24 | WNW | 0 | - |  |
Nepaug Dam Frequently Asked Questions
Nepaug Dam is in Connecticut.
Nepaug Dam is in Litchfield County.
Nepaug Dam is 113 feet high.
Nepaug Dam is 650 feet long.
More Dams in Litchfield County:
Black Rock DamEast Branch Flood Control Dam
Hall Meadow Brook Flood Control Dam
Hancock Brook Dam
Highland Lake Dam
Mad River Flood Control Dam
Nepaug Dam
Richards Corner Compensating Dam
Rocky River Main Dam
Saville Dam
Thomaston Dam
Twin Lakes Dam
Upper Shepaug Dam
Woodridge Lake Dam
More Dams in Connecticut:
Beach Pond DamBlack Rock Dam
Deep River Reservoir Dam
East Branch Flood Control Dam
Easton Reservoir Dam
Ellithorpe Flood Control Site #5 Dam
Enfield Dam
Goodwin Dam
Hall Meadow Brook Flood Control Dam
Hancock Brook Dam
Hemlock Reservoir Dam
Highland Lake Dam
Hop Brook Dam
Lake Gaillard Dam
Lake Saltonstall Dam
Laurel Reservoir Dam
Mad River Flood Control Dam
Mansfield Hollow Dam
Margerie Lake Reservoir South Dam
Mashapaug Pond Dam #1 South
Morgan Pond Dam
Nepaug Dam
Pachaug Pond Dam
Rainbow Reservoir Dam
Richards Corner Compensating Dam
Rocky River Main Dam
Samuel Bargh Reservoir Dam
Samuel P. Senior Dam
Saville Dam
Shenipsit Lake Dam
Shepaug Dam
Stevenson Dam
Thomaston Dam
Trap Falls Reservoir Dam
Twin Lakes Dam
Upper Shepaug Dam
West Thompson Dam
Woodridge Lake Dam
Condition Assessment Classification
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. Note: Rare or extreme event is defined by the regulatory agency based on their minimum
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. Investigations and studies are necessary.
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.
Not Available
Dams for which the condition assessment is restricted to approved government users.
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, environment 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.
Not Available
Dams for which the downstream hazard potential is restricted to approved government users.
Source: National Inventory of Dams