SAN DIEGO
The Most Biologically Rich County
San Diego is the most biodiverse region within the continental United States–having the greatest array of native species and habitat, and greatest amount at risk.
The San Diego River is more than a waterway—it’s a lifeline for local wildlife, plants, and people.
Yet across the region, habitat loss, biodiversity decline, and poor water quality threatens this vital ecosystem.
At the Conservancy, we restore and protect the River’s wildness to keep nature—and the community—resilient. Healthy riverscapes reduce flood risks by slowing and absorbing stormwater, improve water quality by filtering pollutants, and create the conditions for life for native plants, animals, and people.
Every acre we restore strengthens the River’s ability to safeguard clean water, prevent erosion, cool our environment, and support native biodiversity.
What We Protect
50+
native plants that sustain local wildlife
70+
animals that rely on the River's ecosystem
11
reptile & amphibian
species
10
mammal
species
50
bird
species
40
arachnid & insect species
2
Standing Ponds
2
miles of
San Diego River Trail
