Kaupale Reservoir dam
Kaupale Reservoir
Kaupale Reservoir, located in Lawai Homesteads, Kauai, Hawaii, is a privately owned water source regulated by the state's Department of Land and Natural Resources. Built in 1910 for irrigation purposes, this Earth dam stands 50 feet tall and stretches 500 feet in length, with a storage capacity of 240 acre-feet. The reservoir is fed by the Lawai Stream and covers an area of 11 acres, serving as a vital resource for agricultural activities in the region.
Despite being classified with a high hazard potential, Kaupale Reservoir is currently in fair condition, as assessed in April 2021. It undergoes inspections every five years, with the most recent one completed in December 2019. The reservoir's emergency action plan is under review, ensuring preparedness for any potential risks associated with its operation. With its moderate risk assessment rating, the reservoir plays a crucial role in managing water resources in the area, supporting sustainable agriculture and environmental conservation efforts.
Enthusiasts of water resources and climate will be intrigued by Kaupale Reservoir's historical significance and functional importance in maintaining irrigation systems in Kauai. Its strategic location, efficient design, and capacity to store water make it a key asset for the local community. While facing some risk factors, the reservoir's management practices and regular inspections demonstrate a commitment to ensuring its continued operation and safety for the surrounding environment and residents.
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 Kaupale Reservoir -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Sf Wailua River Nr Lihue | 150 cfs | → |
| Waimea River Nr Waimea | 295 cfs | → |
| Eb Of Nf Wailua River Nr Lihue | 51 cfs | → |
| Waialae Str At Alt 3 | 15 cfs | → |
| Left Branch Opaekaa Str Nr Kapaa | 4 cfs | → |
| Wainiha River Nr Hanalei | 145 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Kaupale Reservoir.
Track Kaupale 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.
About Kaupale Reservoir
Where does the data for Kaupale 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.
Other water bodies near here
Snoflo-tracked reservoirs and dams within driving distance of Kaupale Reservoir.