LivewellCalifornia · Contra Costa County · Reservoir
Los Vaqueros Reservoir
Is the fish you caught here safe to eat? Below is every consumption advisory on file for Los Vaqueros Reservoir, by species and size, in plain English — plus what's legal to keep.
6 species with advisories · contaminants: Mercury
California also has statewide guidance
California publishes rules that apply to reservoirs across the state — 10 recommendations covering 5 species — in addition to anything listed for Los Vaqueros Reservoir below.
Strictest statewide rule: Bass, Striped — For women who may become pregnant, pregnant or breastfeeding women, and children under 15: do not eat due to elevated Mercury and PCB.
What's safe to eat from Los Vaqueros Reservoir
Black Bass Species
| Size | Who | Guidance |
|---|---|---|
| All sizes | General population | Limit to one meal per week due to elevated Mercury. |
| Women who may become pregnant & children under 15 | For women who may become pregnant, pregnant or breastfeeding women, and children under 15: do not eat due to elevated Mercury. |
Source: official advisory· updated 2026-09-22
Mississippi Silverside
| Size | Who | Guidance |
|---|---|---|
| All sizes | General population | Limit to four meals per week. |
| Women who may become pregnant & children under 15 | For women who may become pregnant, pregnant or breastfeeding women, and children under 15: limit to four meals per week. |
Source: official advisory· updated 2026-09-22
Rainbow Trout
| Size | Who | Guidance |
|---|---|---|
| All sizes | General population | Limit to four meals per week. |
| Women who may become pregnant & children under 15 | For women who may become pregnant, pregnant or breastfeeding women, and children under 15: limit to four meals per week. |
Source: official advisory· updated 2026-09-22
Sacramento Sucker
| Size | Who | Guidance |
|---|---|---|
| All sizes | General population | Limit to three meals per week due to elevated Mercury. |
| Women who may become pregnant & children under 15 | For women who may become pregnant, pregnant or breastfeeding women, and children under 15: limit to one meal per week due to elevated Mercury. |
Source: official advisory· updated 2026-09-22
Sculpin Species
| Size | Who | Guidance |
|---|---|---|
| All sizes | General population | Limit to four meals per week. |
| Women who may become pregnant & children under 15 | For women who may become pregnant, pregnant or breastfeeding women, and children under 15: limit to four meals per week. |
Source: official advisory· updated 2026-09-22
Threadfin Shad
| Size | Who | Guidance |
|---|---|---|
| All sizes | General population | Limit to four meals per week. |
| Women who may become pregnant & children under 15 | For women who may become pregnant, pregnant or breastfeeding women, and children under 15: limit to two meals per week due to elevated Mercury. |
Source: official advisory· updated 2026-09-22
Is it legal to keep?
These are California's statewide limits — a water-specific rule may override them. Always verify the current regulations before keeping a fish.
| Species | Size | Daily limit | Open season | Keep season |
|---|---|---|---|---|
| Largemouth Bass | — | 5 | Year-round | Same as open |
| Smallmouth Bass | — | 5 | Year-round | Same as open |
| Striped Bass | 18" min | 2 | Year-round | Same as open |
| Rainbow Trout | — | 5 | Year-round | Same as open |
| Black Crappie | — | 25 | Year-round | Same as open |
| Channel Catfish | — | 10 | Year-round | Same as open |
Official rules: California — California DFW
Getting on the water
- Boat ramp boat ramp 0.8 mi Directions
- Fishing access fishing 1.5 mi Directions
Access points from OpenStreetMap contributors.