Santa Clara County’s groundwater — which provides nearly half the drinking water every year for 2 million Silicon Valley residents — fell by up to 60 feet during the state’s recent historic drought due to heavy pumping. But now the vast underground basins have filled back up to the levels where they were before the drought started in 2011, a welcome trend that experts say was driven by heavy winter rains and strict water conservation rules during the drought that eased the need for pumping.

Mountain meadows are starting to get some respect. For over a century, meadows were the first alpine environments targeted for development, grazing and farming, because they tend to be flat and packed with rich soil and nutritious plants. But we’re starting to understand that meadows have a much more important role to play for society at large. Meadows, it turns out, are water banks. As winter snows melt, the runoff flows into meadows, where deep organic soil holds the moisture like a sponge and then releases it slowly.

An agreement amending the longstanding treaty between the U.S. and Mexico on management of the Colorado River will continue the practice of water shortage sharing, but also fund new conservation and environmental programs, and aim to reduce the risk of ruinous drought. The two nations are tentatively scheduled to execute the agreement—Minute 323, an amendment to a 1944 water treaty—on Sept. 26 in Mexico’s Ciudad Juarez. Minute 323 will govern water flows in the Colorado River and other water management issues by extending an existing binational agreement, Minute 319, which was set to expire at the end of 2017.