Guadalupe River
Because of elevated mercury levels in fish, no one should consume any fish taken from Alamitos Creek, Almaden Lake, Almaden Reservoir, Calero Creek, Calero Reservoir, Guadalupe Creek, Guadalupe Reservoir, Guadalupe River, and the associated percolation ponds along the river and creeks.
Biotoxins from harmful algal blooms (HABs) may be found in California water bodies, see Resources related to Biotoxins and Harmful Algal Blooms for more information.