Squam Lake Dam Quick Facts
Squam Lake Dam Map
Squam Lake Dam Information
Squam Lake Dam is a concrete masonry gravity dam located about 1 miles from Ashland, Grafton, New Hampshire.
The dam, which is on the Squam River, was primarily built for Hydroelectric purposes, but also serves for Fire Protection, Stock, Or Small Fish Pond and Recreation benefits.
The dam was designed by and commissioned in 1856 and is currently owned by .
Squam Lake Dam Structure
The Squam Lake Dam is approximately 200 feet (61 m) long, 17 feet (5 m) high and has a structural volume of cubic yards (0 cubic metres).
Squam Lake Dam Storage Capacity & Surface Area
The reservoir has a normal storage capacity of 39,600 acre-ft (48,846 Ml) and maximum capacity of 39,600 acre-ft (48,846 Ml).
The surface area of the reservoir is 7,173 acres (2,903 ha) and the total catchment area is 58 square miles (150 square kilometres).
Squam Lake Dam Spillway
The dam has a 22 feet (7 m) wide controlled spillway with a maximum discharge capacity of 1470 cubic feet per second (42 cubic metres per second).
Squam Lake Dam Compared to Five Famous American Dams
Squam Lake Dam Weather
Current Conditions at Squam Lake Dam
| Parameter | Value |
|---|---|
| Current Time | 23:48 |
| Sunrise | 07:01 |
| Sunset | 18:02 |
| Temperature (°F) | 40 |
| Feels Like (°F) | 35 |
| Cloud Coverage (%) | 100 |
| Pressure (inHg) | 1007 |
| Humidity (%) | 87 |
| Wind Speed (mph) | 6 |
| Rain (mm) | 0 |
7-Day Forecast for Squam Lake 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 | 38 | 46 | 36 | 1009 | 69 | 11 | 28 | NW | 0 | - |  |
| Wed | 32 | 47 | 38 | 1014 | 67 | 13 | 26 | NW | 35 | - | |
| Thu | 31 | 57 | 50 | 1024 | 41 | 5 | 8 | NW | 0 | - |  |
| Fri | 34 | 62 | 56 | 1031 | 40 | 5 | 5 | NW | 0 | - | |
| Sat | 40 | 66 | 56 | 1034 | 46 | 5 | 7 | W | 0 | - | |
| Sun | 42 | 69 | 60 | 1027 | 45 | 6 | 9 | WNW | 0 | - | |
| Mon | 46 | 73 | 64 | 1026 | 44 | 3 | 5 | WNW | 0 | - | |
| Tue | 50 | 70 | 64 | 1023 | 54 | 5 | 8 | S | 0 | - | |
Squam Lake Dam Frequently Asked Questions
Squam Lake Dam is in New Hampshire.
Squam Lake Dam is in Grafton County.
Squam Lake Dam is 17 feet high.
Squam Lake Dam is 200 feet long.
More Dams in Grafton County:
Ayers Island DamComerford Dam
Goose Pond Dam
Grafton Pond Dam
Mascoma Lake Dam
Moore Dam
Newfound Lake Dam
Squam Lake Dam
Wilder Dam
More Dams in New Hampshire:
Arlington Mill Res Evergreen DikeArlington Mills Res West Dike
Arlington Mills Res Wheeler Dam
Ayers Island Dam
Bellows Falls Dam
Big Dan Hole Pond Dam
Blackwater Dam
Bow Lake Dam
Comerford Dam
Conway Lake Dam
Crescent Lake Dam
Eastman Falls Dam
Eastman Lake Dam
Edward MacDowell Dam
Errol Dam
Everett Dam
First Conn Lake South Bay Dike
First Connecticut Lake Dam
Franklin Falls Dam
Garvins Falls Dam
Goose Pond Dam
Grafton Pond Dam
Great East Lake Dam
Hopkinton Dam
Jackman Reservoir Dam
Lake Kanasatka Dam
Lake Waukewan Dam
Lakeport Dam
Lochmere Dam
Mascoma Lake Dam
Massabesic Lake Dam
Merrymeeting Lake Dam
Milton Three Ponds Dam
Moore Dam
Murphy Dam
Newfound Lake Dam
Nubanusit Lake Dam
Ossipee Lake Dam Berry Bay
Ossipee Lake Dam Headworks Dam
Otter Brook Dam
Pawtuckaway Lake /Drowns Dam
Pawtuckaway Lake Dollof Dam
Pawtuckaway Lake/Gove Dike
Pleasant Lake Dam
Powder Mill Dam
Rust Pond Dam
Second Connecticut Lake Dam
Silver Lake Dam
Spofford Lake Dam
Squam 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