Solid cloud cover today, with a mirror surface most of the day and pressure ticking upward. The productive water at Upper Peninsula Lake will be around shallow cover and weed edges. Save your energy for the evening. Work the productive water thoroughly. Cold air keeps the water sluggish; scale everything down.
The bites are poor now
Night
Morning
In California, Upper Peninsula Lake belongs to Tuolumne County. It sits at 9,124 feet above sea level. About 12 acres of surface, which puts the far bank inside easy sight. Yosemite Valley is the closest town at 25 miles. The big place round here is Modesto, 78 miles distant. It sits well inside the county, so one set of rules covers it.
No figure exists for depth, so let the water show you. Still water like this holds fish on the edges rather than out in the open. Read the surface for the wind lane, then fish the edge of it. Reported across Tuolumne County: rainbow trout, brook trout and Sacramento sucker. Read it as a county summary, not a water-by-water list. Take Upper Peninsula Lake a stretch at a time.
The seasonal spread runs 25°F to 57°F. Winter puts a hard lid on this one. Hard cover is dependable here; it goes around mid May. Ice clears near mid May and comes back about early December in a typical year. Fish feed hardest at the start and the close of the open season. It sets the rhythm of the year at Upper Peninsula Lake.
Whether you may fish here is not something records settle. There is no mapped parking or launch close by, which usually means walking in. For the bass here, soft plastics worked slow along cover and a spinnerbait for searching do most of the work. Rules for this water may differ from the county norm. Check whether bait restrictions apply before you buy any. If the gate is shut, Peninsula Lake at 0.6 miles is the nearest alternative. Check the position on Upper Peninsula Lake before loading the car.
32%
The bites are poor now
| 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 |
| 5.2 | 4.6 | 5.4 | 4.2 | 3.2 | 4.3 | 6.2 | 6 | 5.4 | 2.1 | 2.5 | 3.5 | 3.8 | 3.5 | 3.3 | 2.9 | 2.7 | 3.2 | 3.9 | 3.8 | 4 | 3.5 | 3.3 | 3.7 |
| 24° | 21° | 21° | 20° | 20° | 19° | 18° | 18° | 21° | 27° | 32° | 33° | 34° | 35° | 35° | 34° | 32° | 31° | 30° | 29° | 29° | 28° | 27° | 26° |
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 29.89 | 29.9 | 29.92 | 29.92 | 29.95 | 29.94 | 29.93 | 29.94 | 29.92 | 29.91 | 29.93 | 29.95 | 29.94 | 29.93 | 29.92 | 29.92 | 29.93 | 29.95 | 29.96 | 29.98 | 29.99 | 30 | 30.01 | 30.02 |
| 93 | 93 | 94 | 93 | 92 | 88 | 83 | 74 | 69 | 61 | 58 | 59 | 62 | 63 | 63 | 65 | 66 | 64 | 62 | 58 | 54 | 53 | 54 | 55 |
Sam
AI Fishing Assistant for Upper Peninsula Lake
Afternoon
Evening
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Best bite time
Best bite time