ALT A tile map of the U.S. showing streamgages by flow levels through the month of December 2024. For each state, an area chart shows the proportion of streamgages in wet, normal, or dry conditions. Streamflow conditions are quantified using percentiles comparing the past month’s flow levels to the historic record for each streamgage. During the month of December, much of the Mountain West and Southwest saw dry conditions for states such as Montana, Wyoming, Arizona, and New Mexico. Concurrently, parts of the Pacific Coast saw wet conditions for states such as California, Oregon and Washington.