Hydrological drought usually occurs when water supplies become affected after an extended period of reduced precipitation. Groundwater, lake, and reservoir levels are significantly reduced during hydrological drought.
Cachuma Lake, shown in this time lapse video, is a large reservoir that supplies drinking water to Santa Barbara County in California. In September 2016, the lake’s water level reached a historic low after years of reduced precipitation.
| Keyboard Shortcut | Action |
|---|---|
| Space | Pause/Play video playback |
| Enter | Pause/Play video playback |
| m | Mute/Unmute video volume |
| Up and Down arrows | Increase and decrease volume by 10% |
| Right and Left arrows | Seek forward or backward by 5 seconds |
| 0-9 | Fast seek to x% of the video. |
| f | Enter or exit fullscreen. (Note: To exit fullscreen in flash press the Esc key. |
| c | Press c to toggle captions on or off |