Altha Lake Fishing near Mammoth Lakes, California

• Overview

  This water sits in Mono County, California. The surface lies 9,734 feet up. At roughly 12 acres, the whole thing is within casting reach of a single walk. Supplies mean a trip to Mammoth Lakes, 10 miles off. It is 68 miles to Clovis, the nearest city. In the same area: Clarice Lake within 0.5 miles, Laura Lake out at 0.6 miles, Garnet Lake within 1 mile, Ruby Lake out at 1.1 miles and Summit Lake within 1.4 miles. The county line is nowhere near, so one local authority covers the water.

• Where to Fish on Altha Lake

  Depth went unrecorded, which puts the reading back on you. This is a lake, so the margins and the first drop matter most. Weed, then depth: that is the order to fish a water of this kind. Species logged across Mono County include brook trout, rainbow trout and brown trout. It is the county picture; the agency list is water-specific. On Altha Lake the first feature you find is usually worth a session.

• Seasonal Patterns

  Average temperature peaks around 54°F in August and bottoms out near 23°F in February. The freeze arrives properly here and holds. Once it clears, about late May, the fishing comes on quickly. Going by climate averages, expect open water from about late May until roughly late November. May into June fishes hardest, and September gives a second good stretch before the lid returns. Expect Altha Lake to follow that timing.

• Tackle & Baits

  Access status is simply unknown for this water. Nothing built is recorded close to the bank here. For the trout, small spinners and a box of nymphs cover both approaches. Parking space is the usual limit rather than the bank itself. Rules for boats are stricter than rules for the bank in many places. For a change of water, Clarice Lake is 0.5 miles distant. None of that is settled for Altha Lake in what we hold.