Cas Reservoir Inlet Between Lf And
Valley County, IdahoView mapDirections
Idaho DEQ publishes the water-quality measurements for Cas Reservoir Inlet Between Lf And. Here is what has been measured.
- Eutrophic
- Public access
Cas Reservoir Inlet Between Lf And in Valley County, Idaho has water-quality measurements published by Idaho DEQ, shown here as reported. Water clarity: 4.3 ft visibility. Phosphorus: 40 µg/L. Chlorophyll-a (algae): 12.4 µg/L.
Cas Reservoir Inlet Between Lf And is a productive, nutrient-rich eutrophic lake in Valley County, Idaho. Overall water quality is improving over recent sampling years. Limited fish-species data available. Public access is available with 1 public boat landing. Compared to the 8 other monitored lakes in Valley County, Cas Reservoir Inlet Between Lf And ranks #5 for water quality.
Source: EPA Water Quality Portal sampling records, IDEQ, last sampled 2022-09-22. Methodology: how these readings are compared.
What Cas Reservoir Inlet Between Lf And is good for
From access and monitoring records, not editorial picks.
- Boat launch1 documented ramp
Swimming conditions
Readings onlyElevated nutrients
Based on clarity and algae readings from past sampling — there is no live water temperature and a current cyanobacteria reading for this lake. Check your state or county health department before you swim.
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Cas Reservoir Inlet Between Lf And 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 Cas Reservoir Inlet Between Lf And
These are the measurements Idaho DEQ publishes for Cas Reservoir Inlet Between Lf And, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Murky, only visible to about 4.3 ft. Phosphorus 40 µg/L. Chlorophyll-a 12.4 µg/L. TSI 56.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 4.3ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 40µg/L | Fair GoodFairPoor |
| Chlorophyll-a (algae) | 12.4µg/L | Poor GoodFairPoor |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 56 | Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
High nutrients, frequent algae, reduced clarity
Ask about Cas Reservoir Inlet Between Lf And
Answers come straight from the public measurements and survey records on this page.
Recreation & Access
- ButtercupPublic
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Stays via Stay22
Stays near Cas Reservoir Inlet Between Lf And
Compare lakeside cabins, hotels, and vacation rentals near Cas Reservoir Inlet Between Lf And in Valley County, Idaho — live availability and prices for your trip. Switch the map to Satellite to see the lake and how close each stay is to the water. The water-quality readings cover nutrients and algae, not lodging. Cabins and rentals around Cas Reservoir Inlet Between Lf And are listed below.
Top-rated places to stay near Cas Reservoir Inlet Between Lf And
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Fishing Cas Reservoir Inlet Between Lf And
Water Quality Trend: Improving
Based on 6 years of monitoring (2012–2022).
Water clarity
Improving6 years
Phosphorus
Improving-2.11 µg/L/yr6 years
Chlorophyll-a
Stable+0.07 µg/L/yr6 years
Nearby Lakes in Valley County
Frequently asked questions about Cas Reservoir Inlet Between Lf And
Where is Cas Reservoir Inlet Between Lf And?
- Cas Reservoir Inlet Between Lf And is a lake in Valley County, Idaho. Its water-quality measurements are published by Idaho DEQ and shown on this page as reported.
What is the water quality of Cas Reservoir Inlet Between Lf And?
- Cas Reservoir Inlet Between Lf And in Valley County, Idaho has water-quality measurements published by Idaho DEQ, shown here as reported. Water clarity: 4.3 ft visibility. Phosphorus: 40 µg/L. Chlorophyll-a (algae): 12.4 µg/L.
Is Cas Reservoir Inlet Between Lf And safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Are there boat ramps on Cas Reservoir Inlet Between Lf And?
- Cas Reservoir Inlet Between Lf And has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Buttercup. Public access is listed as yes.
Can I fish at Cas Reservoir Inlet Between Lf And?
- Cas Reservoir Inlet Between Lf And 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 Cas Reservoir Inlet Between Lf And across LakeQuality
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Where this data comes from
51 measurements from 1 monitoring station, 2012–2022. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Bureau of Reclamation
1119USBR_WQX51 samples · 2012–2022
Analytical methods
- Depth, Secchi disk depth
- Zebra/Quagga Mussel APHA 10200G Modified
- 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