Boating on the Tuolomne can be divided into two seasons: Spring spill season and Summer powerhouse release season. The spring, high flow season can have very high flows that are suitable for only the most-skilled paddlers. Commercial rafting trips rarely begin above 8,000 cfs. 6,000 cfs is considered an above normal flow, and 3,000-4,000 cfs is considered a very good flow. Once spills from Hetch Hetchy & Lake Eleanor cease, flows are around 1,500 cfs or less. During non spill, flows are a combination of powerhouse outflow from Holm Powerhouse on Cherry Creek, and a minimum release into the Tuolumne River from Early Intake diversion.
The flow from Holm Powerhouse takes a few hours to reach Meral's Pool.
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Inflows to New Don Pedro Reservoir will be mostly the flow from the river, although there are some low elevation creeks that can have a large effect during the winter. Inflow is reported as a 24 hour average after midnight.
|Tuolumne River Below Confluence with Cherry Creek|
|virtual-10553||600 - 10000 cfs||IV||00h56m||2620 cfs (running)|
|Tuolumne4) Lumsden Campground (Merals Pool) to Wards Ferry Bridge||Tuolumne, 1300 cfs||1300 cfs||Paul Martzen|
|Tuolumne4) Lumsden Campground (Merals Pool) to Wards Ferry Bridge [CA]||clavey run out||n/a||steven vaniman|
|Tuolumne [CA]||Rafting Gray's Grindstone on the Tuolumne||n/a||Zachary Collier|
|Tuolumne [CA]||LOOP ON THE T!!- CODY||low||Cody Howard|
|4y20d23h44m||/Tuolumne-Lumsden Campground (Merals Pool) to Wards Ferry Bridge [CA]||Meral's Pool||n/a||Matthew Henry|
|4y287d21h37m||/Tuolumne-Lumsden Campground (Merals Pool) to Wards Ferry Bridge [CA]||Steep take out trail||0 cfs||Paul Martzen|
|4y288d02h37m||@Tuolumne 4) Lumsden Campground (Merals Pool) to Wards Ferry Bridge [CA]||Raft in center route at Stern's||1200 cfs||Paul Martzen|
|> 10 years||@Tuolumne 4) Lumsden Campground (Merals Pool) to Wards Ferry Bridge [CA]||Brent Davis Photos of Tuolumne||n/a||Paul Martzen|
|> 10 years||Tuolumne [CA]||Step 4||900 cfs||5968|
|> 10 years||Tuolumne [CA]||Boat-Crunching Clavey Hole||1250 cfs||Matthew Urdan|
|> 10 years||Tuolumne [CA]||Horizon Line......indeed!||900 cfs||5968|