BirdTrout Open the map

USGS Gauge 04137005 — Au Sable River near Curtisville, Michigan

Water temperature 59.4 °F. 0.8 °F below the five-year normal for this date. 1,190 cfs.

Open in BirdTrout

44.56085, -83.80276 · 778 ft elevation · 1,432 sq mi drainage. This gauge on USGS Water Data →

Right now

Live from USGS — the numbers above are current rather than whenever the page was written. The normal is the mean of every reading at this gauge within 3 days of this calendar date in the previous years of record — 31 readings, averaging 63.9 °F.

The last thirty days

Water temperature, °F · daily mean
2026-08-20 63.1–70.5 °F 2026-09-18
Streamflow, cfs · daily mean
2026-08-20 1,100–1,610 cfs 2026-09-18

Daily means from USGS. A gap in the line is a gap in the record.

The record at this gauge

Month Mean temp Mean flow
Jan 34.0 °F 1,033
Feb 33.9 °F 1,024
Mar 37.4 °F 1,417
Apr 46.3 °F 2,034
May 58.3 °F 1,435
Jun 67.5 °F 1,159
Jul 71.7 °F 1,094
Aug 69.8 °F 1,023
Sep 64.1 °F 996
Oct 54.4 °F 993
Nov 42.4 °F 1,027
Dec 34.9 °F 1,070

Computed here from the last 5 years of USGS daily values at this gauge — 1,826 temperature days over 5.0 years and 1,826 flow days. These are not USGS-published normals, and a month with fewer than 20 days of record is left blank rather than averaged.

The water it stands in

Au Sable River, classified Cold transitional large river by MDNR VSEC — the nearest reach carrying that classification is 2.62 mi from the gauge.

Snapped to NHD reach Au Sable River (60001900005995), 58.9 m away. That join is what lets the app paint this gauge's reading onto the reach it measures.

Other gauges near this one

Dams near this gauge

A dam upstream of a gauge moves what the gauge reads. A hydro dam moves it on a release schedule this page does not know.

Access near this gauge

Fly shops nearby

Open this water on the map →Every reach around it coloured by today's water temperature, with the access points along it.