First Sister Lake
Washtenaw County, MichiganView mapDirections
No nutrient or algae sampling on record from EGLE for this lake.
- Limited data
First Sister Lake in Washtenaw County, Michigan has water-quality measurements published by EGLE, shown here as reported.
First Sister Lake is a lake in Washtenaw County, Michigan. The lake supports 3 documented fish species including Bluegill, Green sunfish, and Yellow bullhead.
Source: EPA Water Quality Portal sampling records, EGLE, last sampled 2022-03-20. Methodology: how these readings are compared.
Vrbo is where to look for cabins and lake homes around First Sister Lake, and Booking.com and Expedia search hotels near the lake for your dates.
What First Sister Lake is good for
From access and monitoring records, not editorial picks.
- Fishing3 species recorded
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether First Sister Lake is safe to swim in today is a call for the Michigan Department of Environment, Great Lakes, and Energy (EGLE) and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for First Sister Lake
These are the measurements EGLE publishes for First Sister Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
No clarity data.
Ask about First Sister Lake
Answers come straight from the public measurements and survey records on this page.
Stays via Stay22
Stays near First Sister Lake
Compare lakeside cabins, hotels, and vacation rentals near First Sister Lake in Washtenaw County, Michigan — 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.
Top-rated places to stay near First Sister Lake
Prices for Oct 23–25, 4 adults. Change dates on the map below.
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Planning a whole trip? See where to stay at Michigan’s top lakes →
Follow First Sister Lake’s readings
Email me when new measurements post for this lake. Updates stay free.
Or email
Fish Species
Click a species to see every lake where it is documented.
Fishing First Sister Lake
Regulated Pollution Sources Nearby
15 EPA-permitted facilities operate within about 5 miles of First Sister Lake under Clean Water Act (NPDES) discharge permits, including 1 classified by the EPA as major discharger. 7 facilities have a reported Clean Water Act violation in the past three years.
- Ann Arbor MS4Ann Arbor · 3 mi away · NPDES MI0053856Major
- Federal Mogul Corp-Tech CenterAnn Arbor · 1.3 mi away · NPDES MI0002089Recent violation
- Ntn Technical CenterAnn Arbor · 2.2 mi away · NPDES MI0041939Recent violation
- Eaton Corporation-Ann ArborAnn Arbor · 2.2 mi away · NPDES MI0004618Recent violation
- Mdot-Ann Arbor MS4Ann Arbor · 3 mi away · NPDES MI0053911Recent violation
- Sweepster Attachments LlcDexter · 3.5 mi away · NPDES MI0045934Recent violation
Facilities permitted to discharge under the Clean Water Act within ~5 miles; proximity does not by itself mean a facility affects this lake. Source: EPA ECHO (ICIS-NPDES), as of 2026-07.
Nearby Lakes in Washtenaw County
Frequently asked questions about First Sister Lake
Where is First Sister Lake?
- First Sister Lake is a lake in Washtenaw County, Michigan. Its water-quality measurements are published by EGLE and shown on this page as reported.
What is the water quality of First Sister Lake?
- First Sister Lake in Washtenaw County, Michigan has water-quality measurements published by EGLE, shown here as reported.
Is First Sister Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
What fish are in First Sister Lake?
- Fish species found in First Sister Lake include Bluegill, Green sunfish, Yellow bullhead. First Sister Lake is located in Washtenaw County, Michigan.
Explore First Sister Lake across LakeQuality
Fish species and the cleanest lakes across Michigan
Fish species and best lakes in Washtenaw County
Species activity outlook by water temperature and season
Where to stay at Michigan's top lakes, each with its readings
Michigan's cleanest lakes, ranked on agency measurements
More lakes in Michigan
Other Lakes in Michigan
Where this data comes from
1 measurement from 1 monitoring station, 2022. Retrieved from the EPA Water Quality Portal on 2026-08-26.
Collected and reported by
- North American Lake Management Society
NALMS1 sample · 2022
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
Regulated discharger data from EPA ECHO (ICIS-NPDES)