Waha Reservoir Middle
Nez Perce County, IdahoView mapDirections
Idaho DEQ publishes the water-quality measurements for Waha Reservoir Middle. Here is what has been measured.
- Limited data
Waha Reservoir Middle in Nez Perce County, Idaho has water-quality measurements published by Idaho DEQ, shown here as reported. Water clarity: 9.7 ft visibility. Phosphorus: 45 µg/L. Chlorophyll-a (algae): 3.9 µg/L.
Waha Reservoir Middle is a lake in Nez Perce County, Idaho. Overall water quality is improving over recent sampling years.
Source: EPA Water Quality Portal sampling records, IDEQ, last sampled 2013-09-24. Methodology: how these readings are compared.
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Waha Reservoir Middle 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 Waha Reservoir Middle
These are the measurements Idaho DEQ publishes for Waha Reservoir Middle, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Moderate clarity, visible to about 9.7 ft. Phosphorus 45 µg/L. Chlorophyll-a 3.9 µg/L. TSI 49.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 9.7ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 45µg/L | Measured, not scored The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential. |
| Chlorophyll-a (algae) | 3.9µg/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. | 49 | Mesotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Moderate nutrients, good water quality
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Fishing Waha Reservoir Middle
Water quality readings over time
3 seasons of samples on record (2012–2015). Calling a direction takes at least 4 years of the same measurement.
Water clarity
Improving2 years
Phosphorus
Improving-1.57 µg/L/yr3 years
Chlorophyll-a
Improving-0.7 µg/L/yr2 years
Nearby Lakes in Nez Perce County
Frequently asked questions about Waha Reservoir Middle
Where is Waha Reservoir Middle?
- Waha Reservoir Middle is a lake in Nez Perce County, Idaho. Its water-quality measurements are published by Idaho DEQ and shown on this page as reported.
What is the water quality of Waha Reservoir Middle?
- Waha Reservoir Middle in Nez Perce County, Idaho has water-quality measurements published by Idaho DEQ, shown here as reported. Water clarity: 9.7 ft visibility. Phosphorus: 45 µg/L. Chlorophyll-a (algae): 3.9 µg/L.
Is Waha Reservoir Middle safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Explore Waha Reservoir Middle across LakeQuality
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Where this data comes from
24 measurements from 1 monitoring station, 2012–2013. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Bureau of Reclamation
1119USBR_WQX24 samples · 2012–2013
Analytical methods
- Depth, Secchi disk depth
- Phosphorus by Single Reagent Colorimetry
- 10200 H ~ Chlorophyll a-b-c Determination
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.