Fig. 1.

(A) Snow, river, and hydrometeorological monitoring stations in the Feather (North Fork, east branch of North Fork, and Middle Fork), Yuba, and American River basins. Gray-shaded areas drain to each US Geological Survey (USGS) stream gauge, which report daily or 15-minute measurements. (B) Median hourly incremental precipitation from the network in (A), and 10-minute brightband height (BBH) from snow level radars in January through February 2017. The 7 January and 6 February storm sequences are gray shaded. (C) Daily regional snowline elevation [calculated using Moderate Resolution Imaging Spectroradiometer (MODIS) fractional snow-covered area], and 15-minute stream discharge at USGS gauge 11413000. Cumulative discharge and precipitation median and range are shown for the (D) 7J and (E) 6F storm events, with median runoff ratios shown in red.