Key Idea Climate change affects water resources:
Water cycle is altered, affecting where, when, and how much water is available.
Floods and drought become more common and intense as regional and seasonal precipitation patterns change and rainfall is more concentrated into heavy events with longer dry periods in between.
Less snow, more rain.
Wet areas get wetter, dry areas get drier.
Mountain snowpack declines, timing of runoff shifts to earlier in spring, and flows are lower in summer.
Increased competition for water supplies.

Source

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