Fig. 4: Maps of the decadal mean WHI values for 500 sites across the USA and Canada.
From: Vanishing weekly hydropeaking cycles in American and Canadian rivers
Maps are shown for (a) 1920–1929, (b) 1930–1939, (c) 1940–1949, (d) 1950–1959, (e) 1960–1969, (f) 1970–1979, (g) 1980–1989, (h) 1990–1999, (i) 2000–2009, and (j) 2010–2019. Circle size corresponds to the two consecutive days with low flows beginning with the Saturday/Sunday (SS, largest symbols) combination and ending with the Friday/Saturday (FS, smallest symbols). Results are shown only when ny ≥ 5 years in a given decade.
