Ririe Reservoir
Bonneville County, Idaho1,560 acresView mapDirections
Idaho DEQ publishes the water-quality measurements for Ririe Reservoir. Here is what has been measured.
- Public access
- Limited data
Ririe Reservoir in Bonneville County, Idaho has water-quality measurements published by Idaho DEQ, shown here as reported. Phosphorus: 19 µg/L. Chlorophyll-a (algae): 3.2 µg/L. Surface area: 1560 acres.
Ririe Reservoir is a 1,560-acre lake in Bonneville County, Idaho. Limited fish-species data available. Public access is available with 1 public boat landing.
Source: EPA Water Quality Portal sampling records, IDEQ, last sampled 2024-09-17. Methodology: how these readings are compared.
What Ririe Reservoir is good for
From access and monitoring records, not editorial picks.
- Boat launch1 documented ramp
- Big water1,560 acres
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Ririe Reservoir is safe to swim in today is a call for the Idaho Department of Environmental Quality and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Ririe Reservoir
These are the measurements Idaho DEQ publishes for Ririe Reservoir, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
No clarity data. Phosphorus 19 µg/L. Chlorophyll-a 3.2 µg/L. TSI 44.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | No reading How deep a black-and-white disk stays visible from the surface. Higher is clearer. | |
| Total phosphorus | 19µg/L | Measured, not scored The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential. |
| Chlorophyll-a (algae) | 3.2µg/L | Measured, not scored The green pigment in algae — a direct measure of how much algae is in the water. |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 44 | Mesotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Moderate nutrients, good water quality
Ask about Ririe Reservoir
Answers come straight from the public measurements and survey records on this page.
Lake Details
Surface area
1,560 acres
Public access
Yes
Listed by Idaho DEQ
No bathymetric survey has been published for Ririe Reservoir, so its depth is not documented here.
Recreation & Access
- Juniper ParkPublic
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
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Fishing Ririe Reservoir
Reservoir Info (USACE NID)
Ririe Reservoir is a man-made reservoir impounded by the Ririe Dam (completed 1977), built primarily for flood risk reduction on the Willow Creek; rockfill-type dam, 253 ft tall and 1,070 ft long.
- Surface area
- 1,560 ac
- Normal storage
- 90,500 ac-ft
- Max storage
- 100,500 ac-ft
- Drainage area
- 638.06 sq mi
- Hazard class
- High
- Owner
- BUREAU OF RECLAMATION
All listed purposes: Flood Risk Reduction;Irrigation;Recreation.
Source: USACE National Inventory of Dams, NID ID ID00344 · Operator website
Nearby Lakes in Bonneville County
Frequently asked questions about Ririe Reservoir
Where is Ririe Reservoir?
- Ririe Reservoir is a lake in Bonneville County, Idaho. Its water-quality measurements are published by Idaho DEQ and shown on this page as reported.
What is the water quality of Ririe Reservoir?
- Ririe Reservoir in Bonneville County, Idaho has water-quality measurements published by Idaho DEQ, shown here as reported. Phosphorus: 19 µg/L. Chlorophyll-a (algae): 3.2 µg/L. Surface area: 1560 acres.
Is Ririe Reservoir safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Are there boat ramps on Ririe Reservoir?
- Ririe Reservoir has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Juniper Park. Public access is listed as yes.
Can I fish at Ririe Reservoir?
- Ririe Reservoir has 1 documented boat landing in the USGS National Boat Ramps inventory. Seasons, size and bag limits, and whether you need a license are set by Idaho's fish and wildlife agency, so check its current regulations before you go.
Explore Ririe Reservoir across LakeQuality
20.3 mi away · 60 ft
4 thermal springs within 21.1 mi, nearest Heise Hot Springs
17.4 mi away · cable-pulled, no boat wake
Species activity outlook by water temperature and season
Where to stay at Idaho's top lakes, each with its readings
Idaho's cleanest lakes, ranked on agency measurements
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Where this data comes from
5 measurements from 1 monitoring station, 2023–2024. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Bureau of Reclamation
1119USBR_WQX5 samples · 2023–2024
Analytical methods
- Phosphorus by Single Reagent Colorimetry
- 10200 H ~ Chlorophyll a-b-c Determination
- Turbidity by Nephelometry
Monitoring station identifiers (1)
EPA condition classes from the National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See where the data comes from and data sources.
Other records on this page
Named boat-access points from the USGS National Boat Ramps inventory