Dam Report

Waimea 60 Mg Reservoir dam

Hawaii, USA Upper Hamakua Ditch Hazard High
Today high
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Tonight low
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Dam height
50ft
Hazard rating
High
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Waimea 60 Mg Reservoir -- None dam
Waimea 60 Mg Reservoir None · Upper Hamakua Ditch
About this dam

Waimea 60 Mg Reservoir

Located in Waimea, Hawaii, the Waimea 60 Mg Reservoir, also known as the Puukapu Reservoir, is a state-owned structure primarily utilized for irrigation purposes. Constructed in 1957, this earth dam stands at a height of 50 feet and has a storage capacity of 189 acre-feet, making it a vital resource for the agricultural community in the region. The reservoir spans an area of 5.1 acres and is situated along the Upper Hamakua Ditch, serving as a crucial component of the local water distribution system.

Despite its significance, the Waimea 60 Mg Reservoir is rated as having a high hazard potential and poor condition assessment, prompting a need for regular inspections and maintenance. The dam's spillway type is uncontrolled with a width of 6 feet, posing potential risks in case of overflow. With a moderate risk level assigned, there is a call for effective risk management measures to ensure the safety and stability of this essential water resource. As climate change continues to impact water availability and distribution patterns, the maintenance and upkeep of structures like the Waimea 60 Mg Reservoir are crucial for sustaining agricultural activities in the region.

StateNone
River / streamUpper Hamakua Ditch
NID IDHI00042
Owner typeState
Primary purposeIrrigation
Dam typeEarth
Year built1957
Dam height50 ft
Dam length1,070 ft
Max storage189 AF
Normal storage176 AF
Surface area5.1 ac
Drainage area0.0 sq mi
Hazard potentialHigh
ConditionPoor
Last inspectionWed, 11 Apr 2018 00:00:00 GMT

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.
Detailed forecast

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.

Hourly detail

Next 5 days, hour by hour

Temperature line with weather symbols on top, snow + rain accumulation as columns, humidity as a dotted line.

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Deep dive

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.

TimeConditionTemp (°F)Snow (in)Rain (in)Humidity (%)Wind (mps)Wind dir
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Long-term outlook

15-day temperature & precipitation

Daily temperatures, snow, and rain projected over the next two weeks.

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Regional inflow

Nearby streamflow gauges

USGS streamgauges around Waimea 60 Mg Reservoir -- inflows here typically show up in storage 24-72 hours later.

Track Waimea 60 Mg Reservoir 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.

FAQ

About Waimea 60 Mg Reservoir

Where does the data for Waimea 60 Mg Reservoir 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 High 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.

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