BirdTrout
East Twin River, Wisconsin
14.4 mapped river miles, draining 67 square miles, in the Lakeshore basin watershed. No gauge stands in it; the nearest is 9.4 miles away, and what this page knows about its temperature is Wisconsin DNR'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 live reading
The nearest gauge is 9.4 miles away, at Kewaunee River — not a reading of this water, but of what the region is doing today.
The character of the water
The East Twin is Class I and Class II water under Wisconsin DNR, managed as wild and as wild supplemented, with 15.3 of its 29.03 NHD miles typed Cold — 53 per cent, and no reach classed otherwise. Half the river classified is half a description; the file says nothing about the other half. There is no gauge in it, and the nearest is on the Fox, 21.1 miles away and a much warmer water. It runs 20.1 feet across at the median, fourth order, draining 66.97 square miles over the 14.4 miles of axis mapped. No block of public land on our map fronts it, and Wisconsin has no access file, so where the bank is open is a question these pages cannot answer. Krok Creek comes in at river mile 5.6, and Thorn Apple Creek meets the river at the mouth.
Thermal classification
Wisconsin DNR's classification of this water, reach by reach. A class, not a temperature — no July mean, because none was measured here.
| Reach | Typed miles | Band | Wisconsin DNR type |
|---|---|---|---|
| RM 14.4–0.0 | 15.3 | cold | — |
Wisconsin DNR has classified 15.3 of the 29 miles NHD carries for this stream — 53% of it. Every typed reach carries the same class, cold. The untyped reaches are not warm water — they are water Wisconsin DNR's inventory does not reach, and the mile ranges above span only the reaches it does.
The lake run
The East Twin River is a Lake Michigan tributary with 40.4 miles of run corridor on it — salmon, steelhead and lake-run brown trout, on their own calendar and under their own rules. Run timing, species and access on the East Twin River →
Questions about this river
- East Twin River fishing report — what it reads right now
- When to fish the East Twin River — hatches, seasons and temperature
- East Twin River fishing regulations — season, size and gear by reach
- Is the East Twin River good for brown trout?
- Is the East Twin River good for rainbow trout?
Wisconsin DNR classification
Wisconsin DNR classifies this water as Class I and Class II. More than one class appears because the classification changes along the river. The thermal bar above shows where. The management tier on those reaches is wild, wild supplemented. This is a designation of the fishery, not the season and creel rules — those change yearly and live with the agency.
WDNR trout stream classification →
Species
WDNR has stocked brown trout into this water 22 times between 2015 and 2025. That is a stocking record rather than a survey — it says the fish were put in, not that a survey has found them since.
WDNR has stocked rainbow trout into this water 21 times between 2015 and 2025. That is a stocking record rather than a survey — it says the fish were put in, not that a survey has found them since.
Hatches on this water
42 insects are recorded from northern Wisconsin, 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 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 |
| 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 |
| 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 |
| Giant Black Stonefly (Salmonfly) Pteronarcys dorsata |
May–June | 50–62°F | #4–6 |
| Green Sedge Rhyacophila spp. |
May–August | 48–64°F | #12–16 |
| Light Cahill Maccaffertium ithaca |
May–July | 55–68°F | #12–16 |
And 28 more — the year-round records, mostly: midges, scuds and sculpins, which are in the water every day and are therefore never the news.
Tributaries and watershed
2 named streams meet this one. Confluence miles are above the mouth; the longest twelve are listed.
- Thorn Apple Creek 5.4 mi · RM 0.0
- Krok Creek 4.3 mi · RM 5.6
East Twin River sits in HUC 8 04030101, 04030102, 04030103, 04030203, 04030204 and 04190000, the Lakeshore basin, and drains 67 square miles, Strahler order 4 at the mouth. 44 NHD reaches carry the name for 29.0 miles in total — more than the 14.4 miles of drawn mainstem, because NHD counts side channels and braids as their own reaches.
Other water nearby
The closest 6 rivers on this site, straight-line from the middle of this one — not drive time.