Holbrook dam
Holbrook
Holbrook is a privately owned dam located in Valley, Idaho, along the Little Squaw Creek and Squaw Creek. Built in 1955 by the USDA NRCS, this Earth-type dam stands at 17 feet tall and has a storage capacity of 71 acre-feet for irrigation purposes. With a low hazard potential and satisfactory condition assessment, Holbrook plays a crucial role in managing water resources for agriculture in the region.
Managed by the Idaho Department of Water Resources, Holbrook is subject to state regulation, permitting, inspection, and enforcement to ensure its safety and functionality. The dam has a moderate risk assessment rating and is equipped with an uncontrolled spillway with a width of 12 feet. Despite its age, Holbrook has been maintained to meet regulatory standards, with its last inspection conducted in June 2017, highlighting its commitment to safe water management practices.
Located within the jurisdiction of the Walla Walla District, Holbrook serves as a vital infrastructure for the local community, contributing to the sustainable use of water resources for irrigation purposes. With its strategic design and operational oversight, Holbrook continues to support the agricultural sector in Valley, Idaho, while adhering to state regulations and ensuring the safety of surrounding areas from potential risks associated with dam operations.
Dam data reference
Condition Assessment
- 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.
- 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.
- 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.
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, environmental 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.
Plan around the weather
Same NOAA / yr.no feed Snoflo's iOS app uses. Watch the precipitation column on the meteogram -- rain on the basin upstream typically lifts inflow 24-72 hours later.
Next 5 days, hour by hour
Temperature line with weather symbols on top, snow + rain accumulation as columns, humidity as a dotted line.
5-day forecast table
Every 3 hours, broken out across temperature, snow, rain, humidity, and wind. Each cell is colour-coded relative to the column min/max.
| Time | Condition | Temp (°F) | Snow (in) | Rain (in) | Humidity (%) | Wind (mps) | Wind dir |
|---|---|---|---|---|---|---|---|
| Loading detailed forecast… | |||||||
15-day temperature & precipitation
Daily temperatures, snow, and rain projected over the next two weeks.
Nearby streamflow gauges
USGS streamgauges around Holbrook -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Nf Payette River Nr Banks Id | 2,600 cfs | → |
| Middle Fork Payette River Nr Crouch Id | 699 cfs | → |
| Payette River Nr Horseshoe Bend Id | 6,280 cfs | → |
| Deadwood River Bl Deadwood Res Nr Lowman Id | 85 cfs | → |
| Payette River Nr Emmett Id | 5,380 cfs | → |
| Sf Payette River At Lowman Id | 1,900 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Holbrook.
Boat launches
- Sage Hen Creek Boat Ramp
- Antelope Boat Ramp
- Banks River Access
- Deer Creek
- Confluence
- Cabarton Road Valley County
Campgrounds
- Cold Springs Group Only Campground - Reserve
- Swinging Bridge
- Swinging Bridge Campground - Reserve
- Hollywood Point
- Hollywood Campground
- Eastside
Fishing spots
Paddle runs
- Boise Nf Boundary To Confluence With Payette River
- Confluence With Bell Creek To Boiling Springs Cabin
- South Fork Payette
- Boise Nf Boundary (1 Mile East Of Banks) To Boise Nf Boundary (1 Mile South Of Banks)
- Cabarton
- Boiling Springs Cabin To Confluence With Fool Creek
Track Holbrook in the Snoflo app
Save this dam as a favorite and get the local NOAA / yr.no forecast plus regional flow context wherever you are.
About Holbrook
Where does the data for Holbrook come from?
Structural and regulatory data come from the U.S. Army Corps of Engineers' National Inventory of Dams (NID). Weather forecast comes from NOAA / yr.no -- the same feed Snoflo's iOS app uses.
How often is the report updated?
NID structural data refreshes annually as the Corps publishes updated assessments. The weather forecast refreshes throughout the day.
What does the Low hazard rating mean?
The Corps of Engineers' hazard potential classification grades probable consequences if the dam fails: High = probable loss of human life; Significant = no probable loss of human life but possible economic loss / environmental damage; Low = no probable loss of human life, only minor economic / environmental losses. See the Dam Data Reference card above for the full definitions.
What's "% of normal"?
The current storage value compared to the historical average storage on this calendar day. 100% = right on average; values above 100% mean above-normal storage (wet year); values below mean below-normal (dry year or drought).
Can I get alerts when storage crosses a threshold?
Yes -- alerts are managed in the Snoflo iOS app. Favorite this dam, set a threshold, and you'll get a push the moment conditions cross.
Other water bodies near here
Snoflo-tracked reservoirs and dams within driving distance of Holbrook.