BirdTrout
Spring Brook, Wisconsin
8.8 mapped river miles, draining 39 square miles, in the Lake Dubay basin watershed. No gauge stands in it; the nearest is 22.1 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 22.1 miles away, at Red River At Morgan Road Near Morgan, Wi — not a reading of this water, but of what the region is doing today.
The character of the water
Spring Brook is Class I water under Wisconsin DNR, managed as wild, with 28.4 of its 29.48 NHD miles typed Cold — 96 per cent, and no reach classed otherwise. A wild designation and near-complete cold typing is the strongest pairing these files produce, and this brook carries it. There is no gauge in it and no measured temperature. The channel is 14 feet across at the median, third order, draining 38.53 square miles over the 8.8 miles of axis this site maps against 29.48 in the NHD, so the mapped water is a fraction of the system. Public ground is five town parcels totalling 24 acres — Jaycee Park fronting 0.31 of a mile, Peaceful Valley Park 0.26 and three smaller pieces a few hundred feet each. No named tributary is recorded entering it.
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 8.8–0.0 | 28.4 | cold | — |
Wisconsin DNR has classified 28.4 of the 29 miles NHD carries for this stream — 96% 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.
Questions about this river
- Spring Brook fishing report — what it reads right now
- When to fish Spring Brook — hatches, seasons and temperature
- How to get to Spring Brook — access, parking and public land
- Spring Brook fishing regulations — season, size and gear by reach
Wisconsin DNR classification
Wisconsin DNR classifies this water as Class I. The management tier on those reaches is wild. 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 →
Public land on the river
5 units of public or open-access land touch this river, 24 acres in total. Acreage is the whole unit, not the part beside the water.
| Unit | Owner | Acres |
|---|---|---|
| Jaycee Park | city land | 11 |
| Peaceful Valley Park | city land | 5 |
| Peaceful Valley Festival Grounds | city land | 2 |
| Springbrook Trail Head - 4th Avenue Dam | city land | 0 |
| Hudson Street Park | city land | 6 |
Species
Wisconsin DNR designates this as trout water — Class I — without naming the species. No fish survey or stocking record for this water is in the files this site reads.
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
Spring Brook sits in HUC 8 07070002, the Lake Dubay basin, and drains 39 square miles, Strahler order 3 at the mouth. 41 NHD reaches carry the name for 29.5 miles in total — more than the 8.8 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.