Fig. 6: Map of the 1980–2019 monotonic trends in WHI at 479 sites across the USA and Canada.
From: Vanishing weekly hydropeaking cycles in American and Canadian rivers

Red upward (blue downward) pointing triangles indicate positive (negative) trends. Trend magnitudes are proportional to the triangle sizes and green circles (pink outlines) indicate locally (globally) statistically significant trends (p < 0.05). Results are shown only when ny ≥ 30 years.