Hansen Dam Quick Facts
Hansen Dam Map
Hansen Dam Information
Hansen Dam is an earthen embankment dam located in Los Angeles, Los Angeles, California.
The dam, which is on the Tujunga Wash River, was primarily built for Flood Risk Reduction purposes, but also serves for Recreation benefits.
The dam was designed by CESPL and commissioned in 1940 and is currently owned by USACE – Los Angeles District.
Hansen Dam Structure
The Hansen Dam is approximately 10,475 feet (3,193 m) long, 97 feet (30 m) high and has a structural volume of 0 cubic yards (0 cubic metres).
Hansen Dam Storage Capacity & Surface Area
The reservoir has a normal storage capacity of 0 acre-ft (0 Ml) and maximum capacity of 44,990 acre-ft (55,494 Ml).
The surface area of the reservoir is 1 acres (0 ha) and the total catchment area is 152 square miles (394 square kilometres).
Hansen Dam Spillway
The dam has a 284 feet (87 m) wide uncontrolled spillway with a maximum discharge capacity of 101000 cubic feet per second (2860 cubic metres per second).
Hansen Dam Compared to Five Famous American Dams
Hansen Dam Weather
Current Conditions at Hansen Dam
| Parameter | Value |
|---|---|
| Current Time | 18:25 |
| Sunrise | 06:57 |
| Sunset | 17:12 |
| Temperature (°F) | 59 |
| Feels Like (°F) | 56 |
| Cloud Coverage (%) | 0 |
| Pressure (inHg) | 1027 |
| Humidity (%) | 12 |
| Wind Speed (mph) | 20 |
| Rain (mm) | 0 |
7-Day Forecast for Hansen 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 | 45 | 65 | 59 | 1028 | 6 | 9 | 14 | N | 0 | - |  |
| Wed | 53 | 72 | 66 | 1022 | 5 | 8 | 11 | NNE | 0 | - | |
| Thu | 55 | 76 | 71 | 1023 | 3 | 8 | 10 | N | 0 | - |  |
| Fri | 56 | 70 | 66 | 1015 | 4 | 7 | 8 | S | 0 | - | |
| Sat | 48 | 53 | 49 | 1008 | 80 | 14 | 19 | SSE | 100 | 3 |  |
| Sun | 45 | 57 | 52 | 1015 | 38 | 5 | 9 | NNW | 100 | 4 | |
| Mon | 46 | 61 | 58 | 1020 | 14 | 4 | 8 | N | 0 | - | |
| Tue | 48 | 64 | 60 | 1020 | 10 | 5 | 7 | NNE | 0 | - | |
Hansen Dam Frequently Asked Questions
Hansen Dam is in California.
Hansen Dam is in Los Angeles County.
Hansen Dam is 97 feet high.
Hansen Dam is 10,475 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