USGS has added the gauge for this run. This gauge is 29 miles downriver, so may not completely accurately reflect levels in this reach. Drainage area at the gauge is 507 square miles. We have created a 'virtual gauge' to approximate flow in this reach based upon approximate drainage area ratio (put-in vs. gauge location) of 0.3388. It should be expected that this virtual gauge will lag actual flow in this reach. That is, when the headwaters are hit with rain, this section may be runnable when the water hasn't yet reached the gauge. Similarly, as the water runs out, this section may fall too low to boat while there is still somewhat elevated flow at the gauge. Also, there will be times when not all tribs contribute proportionally, the virtual gauge may fail to reflect true conditions in this section.
We will continue to embed the gauge from NOAA, in case the USGS gauge goes back offline.

Click here for tabular data.
About 2.3' (about 760 cfs) on that gauge is minimum, and 3.0' (1300 cfs) or better may be optimum.
An anonymous contributor provides (2009-03-31):
There is an unofficial gauge in the river by the CTH J. I would suggest a minimum around 23", below that you will scrape at most of the rapids and may even have to get out. There is no real maximum, for running the upper portion from Mud Lake Road to J. The river will rarely reach heights when the dells section is too high, but could.
| Approximate correlations (at USGS gauge) | |
| Feet | CFS |
| 4.0 | 2,280 |
| 3.5 | 1,770 |
| 3.0 | 1,310 |
| 2.5 | 900 |
| 2.0 | 580 |
| Name | Range | Difficulty | Updated | Level | ||||||||||||||||||||||||||||||||
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| Little Wolf at put-in | ||||||||||||||||||||||||||||||||||||
| virtual-50251 | 200 - 1000 cfs | I(II) | 01h25m | ~ 0 cfs (rc= -1.0 ) | ||||||||||||||||||||||||||||||||
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Virtual gauge APPROXIMATES flow likely at put-in based upon 0.3388 * Royalton gauge. EXPECT that virtual gauge will not always reflect actual conditions. |
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| LITTLE WOLF RIVER AT ROYALTON, WI | ||||||||||||||||||||||||||||||||||||
| usgs-04080000 | 2.30 - 5.00 ft | II(IV) | 01h23m | ~ 1.24 ft (rc= -0.5 ) | ||||||||||||||||||||||||||||||||
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Gauge is well (30+ miles) downstream, with a fairly significant trib (S.Br.L.Wolf) coming in, thus gauge may not accurately reflect actual conditions for this |
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| When | River/Gauge | Subject | Level | Reporter |
|---|---|---|---|---|
| 2y260d11h30m | Big Falls - Little Wolf [WI] |
Big Falls |
n/a | bryan foster |
| 2y260d11h51m | Little Wolf - Big Falls [WI] | Big Falls | n/a | bryan foster |
| 2y260d12h15m | Big Falls - Little Wolf [WI] | Big Falls | n/a | bryan foster |