Quick Facts About North Fork Dam
North Fork Dam Map
North Fork Dam Information
North Fork Dam is an arch dam located about 22 miles from Folsom, Placer, California.
The dam, which is on the North Fork American River, was primarily built for Debris Control purposes, but also serves for Recreation and Hydroelectric benefits.
The dam was designed by and commissioned in 1939 and is currently owned by USACE – Sacramento District.
North Fork Dam Structure
The North Fork Dam is approximately 620 feet (189 m) long, 143 feet (44 m) high and has a structural volume of 0 cubic yards (0 cubic metres).
North Fork Dam Storage Capacity & Surface Area
The reservoir has a normal storage capacity of 14,390 acre-ft (17,750 Ml) and maximum capacity of 19,310 acre-ft (23,818 Ml).
The surface area of the reservoir is 280 acres (113 ha) and the total catchment area is 342 square miles (886 square kilometres).
North Fork Dam Spillway
The dam has a 200 feet (61 m) wide uncontrolled spillway with a maximum discharge capacity of 65400 cubic feet per second (1852 cubic metres per second).
North Fork Dam Compared to Four Famous American Dams
| North Fork Dam Placer, California |
Hoover Dam Clark County, Nevada |
Grand Coulee Dam Okanogan County, Washington |
Theodore Roosevelt Dam Maricopa County, Arizona |
Glen Canyon Dam Coconino County, Arizona |
|
|---|---|---|---|---|---|
| Height (ft) | 143 | 730 | 550 | 357 | 216 |
| Length (Ft) | 620 | 1,244 | 5,673 | 6,920 | 1,565 |
| Storage Volume (acre-ft) | 19,310 | 30,237,000 | 9,562,000 | 3,540,000 | 29,875,000 |
| Drainage Area (sq miles) | 342 | 167,800 | 74,100 | 3,611 | 108,355 |
North Fork Dam Weather
Current Conditions at North Fork Dam
Failed to fetch current weather data.7-Day Forecast for North Fork Dam
Failed to fetch weather forecast data.North Fork Dam Frequently Asked Questions
North Fork Dam is in California.
North Fork Dam is in Placer County.
North Fork Dam is 143 feet high.
North Fork Dam is 620 feet long.
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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