Silver Lake Flat Reservoir
Utah County, UtahView mapDirections
Utah DWQ publishes the water-quality measurements for Silver Lake Flat Reservoir. Here is what has been measured.
- Oligotrophic
- Impaired · Oxygen depletion (low DO)
- Limited data
Silver Lake Flat Reservoir in Utah County, Utah has water-quality measurements published by Utah DWQ, shown here as reported. Water clarity: 10.5 ft visibility. Phosphorus: 9.9 µg/L. Chlorophyll-a (algae): 1.1 µg/L.
Silver Lake Flat Reservoir is a cold, clear oligotrophic lake in Utah County, Utah. Water clarity is improving over recent sampling years. Compared to the 18 other monitored lakes in Utah County, Silver Lake Flat Reservoir ranks #1 for water quality.
Source: EPA Water Quality Portal sampling records, Utah DWQ, last sampled 2024-09-19. Methodology: how these readings are compared.
Vrbo is where to look for cabins and lake homes around Silver Lake Flat Reservoir, and Booking.com and Expedia search hotels near the lake for your dates.
What Silver Lake Flat Reservoir is good for
From access and monitoring records, not editorial picks.
- Clear water10.5 ft of visibility
- Camping1 public campground nearby
Swimming conditions
Readings onlyLimited data
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. Silver Lake Flat Reservoir is listed impaired under Clean Water Act §303(d) (IR 5) for oxygen depletion (low DO). Check local advisories before you swim.
Whether Silver Lake Flat Reservoir is safe to swim in today is a call for the Utah Division of Water Quality and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Silver Lake Flat Reservoir
These are the measurements Utah DWQ publishes for Silver Lake Flat Reservoir, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Good clarity, visible to about 10.5 ft. Phosphorus 9.9 µg/L. Chlorophyll-a 1.1 µg/L. TSI 37.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 10.5ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 9.9µg/L | Good GoodFairPoor |
| Chlorophyll-a (algae) | 1.1µg/L | Good GoodFairPoor |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 37 | Oligotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Low nutrients, clear water. No reading is a swimming clearance.
Ask about Silver Lake Flat Reservoir
Answers come straight from the public measurements and survey records on this page.
Recreation & Access
Public campgrounds near Silver Lake Flat Reservoir
- Holman Flat Dispersed Area1.6 km
Nearest public campgrounds in the USGS National Map inventory, within about 3 miles. An empty list means USGS records no campground that close, which is not the same as camping being unavailable. Where the source gives an official reservation link, it is used; the cabin and hotel search does not cover campsites. More camping lakes
Stays via Stay22
Stays near Silver Lake Flat Reservoir
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Top-rated places to stay near Silver Lake Flat Reservoir
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Fishing Silver Lake Flat Reservoir
Water quality readings over time
3 seasons of samples on record (2012–2024). Calling a direction takes at least 4 years of the same measurement.
Water clarity
Improving3 years
Chlorophyll-a
Worsening+0.17 µg/L/yr2 years
Reservoir Info (USACE NID)
Silver Lake Flat Reservoir is a man-made reservoir impounded by the North Utah County - Silver Lake Flat (completed 1971), built primarily for water supply on the Silver Creek; earth-type dam, 84 ft tall and 1,500 ft long.
- Normal storage
- 1,040 ac-ft
- Max storage
- 1,384 ac-ft
- Drainage area
- 4 sq mi
- Hazard class
- High
- Owner
- North Utah County Water Conservancy Dist
Source: USACE National Inventory of Dams, NID ID UT00276 · Operator website · Matched by proximity (0.29 km)
EPA Impairment Status
Silver Lake Flat Reservoir is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 5).
Causes of impairment
Designated uses not supporting: Aquatic life.
Source: EPA ATTAINS assessment unit UT-L-16020201-006_00 · Official waterbody report
Nearby Lakes in Utah County
Frequently asked questions about Silver Lake Flat Reservoir
Where is Silver Lake Flat Reservoir?
- Silver Lake Flat Reservoir is a lake in Utah County, Utah. Its water-quality measurements are published by Utah DWQ and shown on this page as reported.
What is the water quality of Silver Lake Flat Reservoir?
- Silver Lake Flat Reservoir in Utah County, Utah has water-quality measurements published by Utah DWQ, shown here as reported. Water clarity: 10.5 ft visibility. Phosphorus: 9.9 µg/L. Chlorophyll-a (algae): 1.1 µg/L.
Is Silver Lake Flat Reservoir safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Silver Lake Flat Reservoir is listed impaired under Clean Water Act §303(d) (IR 5) for oxygen depletion (low DO). Check local advisories before you swim.
Are there campgrounds on Silver Lake Flat Reservoir?
- Silver Lake Flat Reservoir has 1 public campground from USGS The National Map within 5 km, including Holman Flat Dispersed Area. This is a location join, not a booking. Cabins and hotels are listed separately; campsite reservations use the official link when the source provides one.
Explore Silver Lake Flat Reservoir across LakeQuality
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Where this data comes from
14 measurements from 1 monitoring station, 2012–2024. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Utah Department Of Environmental Quality
UTAHDWQ_WQX14 samples · 2012–2024
Analytical methods
- Field Measurements
- Phosphorus by 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.
Other records on this page
Impairment status from EPA ATTAINS 303(d) database
Public campgrounds from USGS The National Map Structures, within about 3 miles