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Legend (OAR_OAP/Streamflow)

Seven-Day Low Streamflows in the United States, 1940–2018 (0)
More than 50% decrease More than 50% decrease
20% to 50% decrease 20% to 50% decrease
20% decrease to 20% increase 20% decrease to 20% increase
20% to 50% increase 20% to 50% increase
More than 50% increase More than 50% increase
Three-Day High Streamflows in the United States, 1940–2018 (1)
More than 50% decrease More than 50% decrease
20% to 50% decrease 20% to 50% decrease
20% decrease to 20% increase 20% decrease to 20% increase
20% to 50% increase 20% to 50% increase
More than 50% increase More than 50% increase
Annual Average Streamflow in the United States, 1940–2018 (2)
More than 50% decrease More than 50% decrease
20% to 50% decrease 20% to 50% decrease
20% decrease to 20% increase 20% decrease to 20% increase
20% to 50% increase 20% to 50% increase
More than 50% increase More than 50% increase
Timing of Winter-Spring Runoff in the United States, 1940–2018 (3)
More than 10 days earlier More than 10 days earlier
5 to 10 days earlier 5 to 10 days earlier
2 to 5 days earlier 2 to 5 days earlier
2 days earlier to 2 days later 2 days earlier to 2 days later
Number of Days with Very Low Streamflow, 1940–2018 (4)
Greater than 50 day decrease Greater than 50 day decrease
20 to 50 day decrease 20 to 50 day decrease
5 to 20 days decrease 5 to 20 days decrease
5 day decrease to 5 day increase 5 day decrease to 5 day increase
5 to 20 day increase 5 to 20 day increase
20 to 50 day increase 20 to 50 day increase
Greater than 50 day increase Greater than 50 day increase