Portneuf Dam Quick Facts
Portneuf Dam Map
Portneuf Dam Information
Portneuf Dam is dam located about 18 miles from Lava Hot Springs, Caribou, Idaho.
The dam, which is on the Portneuf River Snake River, was primarily built for Other purposes, but also serves for benefits.
The dam was designed by and commissioned in 1912 and is currently owned by .
Portneuf Dam Structure
The Portneuf Dam is approximately 1,475 feet (450 m) long, 55 feet (17 m) high and has a structural volume of cubic yards (0 cubic metres).
Portneuf Dam Storage Capacity & Surface Area
The reservoir has a normal storage capacity of 20,504 acre-ft (25,291 Ml) and maximum capacity of acre-ft (0 Ml).
The surface area of the reservoir is 1,593 acres (645 ha) and the total catchment area is 97 square miles (251 square kilometres).
Portneuf Dam Spillway
The dam has a 40 feet (12 m) wide uncontrolled spillway with a maximum discharge capacity of 462 cubic feet per second (13 cubic metres per second).
Portneuf Dam Compared to Five Famous American Dams
Portneuf Dam Weather
Current Conditions at Portneuf Dam
| Parameter | Value |
|---|---|
| Current Time | 22:53 |
| Sunrise | 07:41 |
| Sunset | 18:44 |
| Temperature (°F) | 56 |
| Feels Like (°F) | 53 |
| Cloud Coverage (%) | 4 |
| Pressure (inHg) | 1016 |
| Humidity (%) | 36 |
| Wind Speed (mph) | 5 |
| Rain (mm) | 0 |
7-Day Forecast for Portneuf 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 | 49 | 76 | 71 | 1016 | 18 | 7 | 10 | SW | 0 | - |  |
| Wed | 48 | 73 | 70 | 1007 | 20 | 23 | 27 | SSW | 0 | - | |
| Thu | 35 | 50 | 40 | 1006 | 80 | 12 | 19 | W | 100 | 4 |  |
| Fri | 31 | 40 | 28 | 1015 | 63 | 22 | 30 | N | 92 | - | |
| Sat | 27 | 46 | 34 | 1023 | 51 | 10 | 14 | NNW | 0 | - | |
| Sun | 30 | 52 | 43 | 1018 | 37 | 10 | 11 | WSW | 0 | - |  |
| Mon | 35 | 46 | 41 | 1019 | 72 | 8 | 16 | S | 43 | 1 |  |
| Tue | 36 | 64 | 54 | 1018 | 42 | 17 | 27 | WSW | 0 | - |  |
Portneuf Dam Frequently Asked Questions
Portneuf Dam is in Idaho.
Portneuf Dam is in Caribou County.
Portneuf Dam is 55 feet high.
Portneuf Dam is 1,475 feet long.
More Dams in Caribou County:
Blackfoot DamChina Hat Dam
Itafos Tailings Pond #4 Dam
Portneuf Dam
Smoky Canyon No 2 Dam
Soda Dam
More Dams in Idaho:
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Arrowrock Dam
Ashton Dam
Black Canyon Diversion Dam
Blackfoot Dam
Bliss Dam
Brundage Dam
Bybee Dam
C Ben Ross Dam
C J Strike Dam
Cabinet Gorge Dam
Cascade Dam
Cedar Creek Dam
China Hat Dam
Crane Creek Dike
Crane Creek Main Dam
Daniels Dam
Deadwood Dam
Deep Creek Dam
Deer Flat Lower Dam
Deer Flat Middle Dam
Deer Flat Upper Dam
Fish Creek Dam
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Goose Lake Dam
Grouse Creek South Dam
Hayden Lake Dam
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Henrys Lake Dam
Hot Springs No 2 Dam
Hulet No 2 Dam
Island Park Dam
Itafos Tailings Pond #4 Dam
Little Camas Dam
Little Payette Lake Main Dam
Little Wood River Dam
Lost Valley Dam
Lower Salmon Dam
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Milner Dam-Middle
Minidoka Dam
Mormon Dam
Mountain Home Dam
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Oneida Main 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