12.5 mapped river miles, draining 27 square miles, in the Au Sable River watershed. No gauge stands in it; the nearest is 6.5 miles away, and what this page knows about its temperature is MDNR's classification of the water itself.
50°F and colder is cold, through cold-transitional and cool, to warm above 70°F — the same four bands, breaking at 58, 64 and 70°F, that the app paints. Grey is water nobody has measured.
The nearest gauge is 6.5 miles away, at North Branch Au Sable River At Kelloggs Br — not a reading of this water, but of what the region is doing today.
The pills above go to USGS. These are this site's pages for the same gauges — a thirty-day chart, the monthly means, the record, and today's reading against the five-year normal for today: 04135800.
Twelve and a half mapped miles, second order, a median 13.8 feet wide over a 27.17-square-mile drainage, ending in the East Branch Big Creek at river mile 0.0. What stands out is how little of it MDNR has typed: 1.2 miles, 10 percent of the length, the lowest coverage among these streams. That single typed segment, between river miles 11.8 and 7.3, is called cool, a warm transitional stream on low gradient; a cold stream point at river mile 2.9 carries zero typed miles. The classes describe the valley segment rather than the water, and there is no measured temperature here; the nearest gauge, North Branch Au Sable River at Kelloggs Br, is 6.5 miles away. Type 1 regulations cover 11.0 miles, last Saturday in April through September 30th, five fish with no more than three 15 inches or greater. Five public land units total 239,222 acres. No access sites or launches are recorded.
MDNR types this water from its valley, not from a thermometer in it. A class, not a temperature — no July mean, because none was measured here.
| Reach | Typed miles | Band | MDNR type |
|---|---|---|---|
| RM 11.8–7.3 | 1.2 | cool | Warm transitional stream · low gradient |
| RM 2.9–2.9 | 0.0 | cold | Cold stream · medium gradient |
MDNR has classified 1.2 of the 12.5 miles NHD carries for this stream — 10% of it. The typed water splits 1.2 mi cool, 0.0 mi cold. The untyped reaches are not warm water — they are water MDNR's inventory does not reach, and the mile ranges above span only the reaches it does.
MDNR trout stream types, as designated. Types on file cover 11.0 of the 12.5 mapped miles; 1.5 miles carry no type in this dataset. Always check the current Michigan Fishing Guide before you fish — this is a copy, and the Guide is the rule.
| Type | Where | Season | Minimum sizes |
|---|---|---|---|
|
Type 1 11.0 mi |
RM 12.5–5.6 RM 4.5–0.0 |
Last Saturday in April–September 30th | Brook trout 7", Brown trout 8", Rainbow trout / steelhead 10", Lake trout 10", Chinook salmon 10", Coho salmon 10", Pink salmon 10", Atlantic salmon 10" |
Creel across all types: 5 fish, with no more than 3 trout 15“ or greater. Zero (0) Arctic Grayling. Tackle: Artificial lures and all types of natural bait may be used.
Blue Ribbon. West and East Branches Big Creek (BR 21), 3.0 mapped miles. MDNR's limits, verbatim — upstream: East Branch: County Line, West Branch: Townline Road; downstream: N. Branch AuSable, N. Branch AuSable.
5 units of public or open-access land touch this river, 239,222 acres in total. Acreage is the whole unit, not the part beside the water.
| Unit | Owner | Acres |
|---|---|---|
| Grayling Management Unit | Michigan DNR | 130,704 |
| Au Sable State Forest - Grayling Unit | Michigan Department of Natural Resources | 89,732 |
| Kirtland Warbler Unit Lovells | State Dept. of Natural Resources | 9,904 |
| Mackinac State Forest - Atlanta Unit | Michigan Department of Natural Resources | 6,861 |
| Kirtlands Warbler Wildlife Management Area | FWS | 2,021 |
No species records for this water in the files this site reads.
53 insects are recorded from northern lower Michigan, which is the region this river sits in. That is a claim about the region and not a survey of this stream: nobody has recorded which of them has been caught here. Open the river in the app and the hatch panel will narrow it to the ones whose temperature window today's reading is inside.
| Insect | Peak | Water | Size |
|---|---|---|---|
| Fish Eggs Other |
October–January and April | 33–60°F | #10–16 |
| Little Black Stonefly Allocapnia / Capnia spp. |
January–April | 34–46°F | #16–18 |
| Little Brown Stonefly Taeniopteryx / Strophopteryx spp. |
February–April | 38–50°F | #12–16 |
| Blue-Winged Olive Baetis spp. |
March–May and September–November | 38–58°F | #16–22 |
| Blackfly Simulium spp. |
April–June | 40–65°F | #18–22 |
| Blue Quill Paraleptophlebia adoptiva |
April–May | 44–56°F | #16–18 |
| Cranefly Tipula spp. |
April–June and September–October | 40–65°F | #6–10 |
| Grannom Brachycentrus spp. |
April–May | 48–58°F | #14–16 |
| Green Rock Worm / Green Weenie Rhyacophila spp. |
April–June and September–October | 45–68°F | #10–14 |
| Hendrickson Ephemerella subvaria |
April–May | 45–58°F | #12–14 |
| Little Black Caddis Chimarra atterima |
April–May | 46–58°F | #16–20 |
| Alderfly Sialis spp. |
May–June | 52–66°F | #10–14 |
| Caterpillar Lepidoptera larvae |
May–September | 55–75°F | #8–14 |
| Crayfish Orconectes spp. |
May–October | 55–78°F | #4–8 |
And 39 more — the year-round records, mostly: midges, scuds and sculpins, which are in the water every day and are therefore never the news.
1 named stream meets this one. Confluence miles are above the mouth; the longest twelve are listed.
Middle Branch Big Creek sits in HUC 8 04070007, the Au Sable River watershed, and drains 27 square miles, Strahler order 2 at the mouth. 12 NHD reaches carry the name for 12.5 miles in total.
The closest 6 rivers on this site, straight-line from the middle of this one — not drive time.