San Francisco Bay’s watershed stretches from the granite tips of the Sierra Nevada to the Golden Gate, covering almost 60,000 square miles and nearly 40 percent of California. Half of California’s surface water supply falls as rain or snow within the watershed, frequently as “ephemeral” or intermittent streams, creeks, and marshes that flow with the seasons.
That’s why San Francisco Baykeeper Sejal Choksi-Chugh asked her scientists and lawyers to analyze how a new Trump administration proposal to strip Clean Water Act protections from ephemeral waters would impact San Francisco Bay.
Staff Scientist Ian Wren soon realized that the proposal would strip protections from the headwaters of creeks and rivers and numerous streams that feed the California Delta and San Francisco Bay. “Over forty percent of the Bay Area’s stream miles—and over sixty percent of the creeks across California—would lose protection under the proposed rule,” says Ian...
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