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Union Valley Reservoir

California
11.07 km²
38.8727, -120.4066
9 species
NHD 63434896
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Imagery © Esri
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About Union Valley Reservoir

Union Valley Reservoir is a natural lake or pond in California, United States. It covers approximately 11.07 km² (2735 acres). The lake centroid is located at 38.8727° N, 120.4066° W. 9 fish species are commonly found in waters like this one, including 2 introduced species. Lake boundary and identifier come from the USGS National Hydrography Dataset.

At a glance

Best season
April – October
Long open-water season
Natural lake
Large
Room for multiple techniques
Species diversity
Moderate
9 species in this region
Access
Public waterbody
Check California fishing regulations

Weather at Union Valley Reservoir

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Best fishing times today

Day length: 11h 35m
Dawn13:36
Sunrise14:03
Sunset01:38
Dusk02:05

Bite windows today

  • Dawn13:06 – 15:03Excellent
  • Morning15:03 – 19:50Good
  • Midday19:50 – 22:38Calm
  • Afternoon22:38 – 00:38Good
  • Dusk00:38 – 02:35Excellent
  • Night02:35 – 13:06Good
Moon: 13% · waning↑ 10:56

Fish species

Species data comes from GBIF and is refreshed by donors.Support this →

Showing 9 of 9 species

Gear & tips for rainbow trout

Rod
5- to 7-weight fly rod
Sage X
Vision XO
Loop Q
Reel
5/6-weight fly reel
Mainline
WF-5/6 floating line + intermediate
Leader
Tapered + 0.20 mm tippet
Lures / bait
  • Streamers
  • Egg patterns
  • Nymphs
  • Dry flies
  • Boobies
Find fly fishing gear at Sportfish
Season
April–November (put-and-take year-round)
Time of day
All day
Tip

Put-and-take fishing is common. Vary your depth. Popular Swedish waters: Bunn, Sommen and many small stocked put-and-take ponds.

Full guide

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Everything you need before you launch — license, regulations, and current water conditions.

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Size & season limits
Water conditions & levels
USGS gauge data near Union Valley Reservoir
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Frequently asked questions

What fish species live in Union Valley Reservoir?

Species you can expect in or near Union Valley Reservoir include Striped Bass, Rainbow Trout, Crappie, Smallmouth Bass, Largemouth Bass, Channel Catfish, Bluegill / Sunfish, Brown Trout, and others. The list is based on species present in California waters and GBIF occurrence records.

How big is Union Valley Reservoir?

Union Valley Reservoir covers approximately 11.07 square kilometres (2735 acres), based on the USGS National Hydrography Dataset.

Where is Union Valley Reservoir located?

Union Valley Reservoir is located in California, United States, with its centroid at 38.8727°, -120.4066°.

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Data sources: USGS National Hydrography Dataset · GBIF