Skip to content

Union Valley Reservoir

Union Valley Reservoir is a reservoir in California, near El Dorado County.

Live lake forecast

Union Valley Reservoir Fishing Weather

National Weather Service
Loading current weather…

Fish species in Union Valley Reservoir

Union Valley Reservoir is a reservoir in El Dorado County, California and covers about 2,889.4 acres, reaches about 104.8 feet at its deepest point and holds roughly 266,369 acre-feet.

Union Valley Reservoir is big water, and a useful pattern in one arm may not carry to the far end of the lake. Deep water at Union Valley Reservoir gives fish room to move away from shore as summer heat and bright light build.

What Makes Union Valley Reservoir Different

This water is a high Sierra water-supply lake with kokanee, trout, smallmouth bass, granite points, timber, and broad open water; add vibration in stained water.

Find kokanee before setting a trolling depth, cast spoons for trout, and drag small plastics over granite for smallmouth; give low-light water a slower bottom pass.

How Union Valley Reservoir Fishes

The reservoir is part of the Upper American River hydroelectric system; compare shallow and deeper water. Water movement through that chain and cold snowmelt can change temperature quickly near inflows.

The main choice for the day is whether to follow kokanee schools and cold hydroelectric inflow while smallmouth use granite points. Make that decision before filling the deck with unrelated tackle; make the next cast parallel to the edge.

One shallow pass and one pass down the first break answer more than a long run; give low-light water a slower bottom pass. The comparison shows whether fish left the bank or simply stopped chasing fast lures; change retrieve speed before changing lures.

A small change in bottom can matter more than a dramatic shoreline; use a smaller lure in clear water. Feel for the first hard patch, channel lip, stump line, or clean weed edge and stay close to it; separate open-water fish from bank fish.

Union Valley Reservoir FAQs

What makes Union Valley Reservoir different from other California waters?

This water is a high Sierra water-supply lake with kokanee, trout, smallmouth bass, granite points, timber, and broad open water.

What is a useful first fishing plan for Union Valley Reservoir?

Find kokanee before setting a trolling depth, cast spoons for trout, and drag small plastics over granite for smallmouth.

Which local detail matters most when fishing Union Valley Reservoir?

The reservoir is part of the Upper American River hydroelectric system.

Check the evidence

Sources and what they establish

Source dates describe the evidence, not a live catch forecast. Check the managing authority before planning access or keeping fish.

  • Brook Trout — supporting source

    California Department of Fish and Wildlife High Mountain Lakes Survey

    The linked source supports this fish’s presence or stocking in this water.

    Source checked:

    This is not a record catch or a measure of how many fish are there today. The source may describe an earlier period.

  • Steelhead — supporting source

    PISCES California Fish Data and CDFW Native Fish Ranges

    The linked source supports this fish’s presence or stocking in this water.

    Source checked:

    This is not a record catch or a measure of how many fish are there today. The source may describe an earlier period.

✉Join the Fishing Tips Daily newsletter waiting list

Our newsletter is not sending yet. Leave your email if you would like to hear from us when it launches.

By joining, you agree to receive our newsletter when it launches. To request removal before then, contact us. Read our privacy policy.