Early AccessHelp us build the future of location-specific field guides. Limited-time pricing of $1.99 regularly $19.99 while we perfect the platform with your feedback.
← Back to Santa Clara County

Almaden Reservoir

Ecosystem Overview

The Almaden Reservoir ecosystem supports 19 documented wildlife species across 19 taxonomic genera. Located in santa clara county, california, this area provides critical habitat with diverse natural communities. The location hosts 4 frequently observed species and 3 occasionally documented species, creating a balanced ecosystem with both resident and visiting wildlife. While San José nearby has 81% more documented species, Almaden Reservoir offers unique wildlife observation opportunities. This location ranks #30 for species diversity among 96 santa clara county County natural areas, placing it in the 69th percentile for biodiversity.

Biodiversity Highlights

19
Total Species
Documented wildlife species
19
Genus Diversity
Taxonomic genera represented
10
Common Species
Frequently observed species
9
Rare Species
Occasionally documented species
#30
Regional Rank
Out of 96 locations

Species Distribution

Very Common4 species
Common6 species
Occasional6 species
Rare3 species

Regional Context

Regional Ranking
#30 of 96 locations
69th percentile for diversity
vs. San José
-81% species diversity

Most Common Species

Showing 20 most frequently observed species out of 19 total documented species.

Marsilea vestita

Marsilea vestita

hooked-pepperwort

Very Common3 obs.
Diabrotica undecimpunctata

Diabrotica undecimpunctata

Spotted Cucumber Beetle

Very Common2 obs.
Zannichellia palustris

Zannichellia palustris

Horned Pondweed

Very Common2 obs.
Ceratophyllum demersum

Ceratophyllum demersum

rigid hornwort

Very Common2 obs.
Ranunculus trichophyllus

Ranunculus trichophyllus

Whitewater Crowfoot

Very Common2 obs.
Echinodorus berteroi

Echinodorus berteroi

Common2 obs.
Rhionaeschna californica

Rhionaeschna californica

California Darner

Common1 obs.
Anaxyrus boreas

Anaxyrus boreas

Western Toad

Common1 obs.
Lithobates catesbeianus

Lithobates catesbeianus

Common Bullfrog

Common1 obs.
Pseudacris regilla

Pseudacris regilla

Pacific chorus frog

Common1 obs.
Fulica americana

Fulica americana

American Coot

Common1 obs.
Paspalum distichum

Paspalum distichum

Knotgrass

Occasional1 obs.
Datura stramonium

Datura stramonium

thorn-apple

Occasional1 obs.
Calibrachoa parviflora

Calibrachoa parviflora

Seaside petunia

Occasional1 obs.
Portulaca oleracea

Portulaca oleracea

common purslane

Occasional1 obs.
Gnaphalium palustre

Gnaphalium palustre

western marsh cudweed

Occasional1 obs.
Cyperus erythrorhizos

Cyperus erythrorhizos

red-root flat sedge

Occasional1 obs.
Crassula aquatica

Crassula aquatica

Water Pygmyweed

Rare1 obs.
Anas platyrhynchos

Anas platyrhynchos

mallard

Rare1 obs.

Want the Complete Field Guide?

Get all 19 species with 3-4 high-quality images each, detailed descriptions, and a downloadable PDF for offline use.

Premium field guide includes identification tips, seasonal patterns, and professional layout optimized for field use.

Get Your Personalized Field Guide

Download a professional PDF field guide featuring all the species found in Almaden Reservoir. Perfect for outdoor adventures, education, and nature exploration.

$1.99

Get Your Personalized Field Guide

Download a professional PDF field guide featuring all the species found in Almaden Reservoir. Perfect for outdoor adventures, education, and nature exploration.

Your field guide will be delivered to this email address. Please double-check for accuracy.

$1.99
No comparable locations found in this region.

Nearby Wildlife Areas in Santa Clara County

Discover 8 other wildlife-rich locations near Almaden Reservoir. Each offers unique biodiversity and wildlife viewing opportunities.

Regional Wildlife Network

These nearby locations complement Almaden Reservoirwithin Santa Clara County's wildlife network. Species counts reflect documented observations and help identify the most biodiverse areas for your nature explorations.

Favicon Attribution: Graphics from Twemoji by Twitter, Inc and contributors Licensed under CC-BY 4.0: https://creativecommons.org/licenses/by/4.0/ Source: https://github.com/twitter/twemoji