{"api":"The Waterline Data API","version":"v1","docs":"https://the-waterline.com/api","data_as_of":null,"data_as_of_label":null,"data_pulled_at":"2026-11-11T01:08:34.977Z","generated_at":"2026-11-11T08:16:52.220Z","attribution":"Credit The Waterline (the-waterline.com) with a visible link to the page the figure came from; every record carries its page_url.","id":"heatmap/index","section":"heatmap","section_label":"heatmap","title":"The West on one map","subtitle":"Drought by state, storage at each dam and flow at each gauge, against the 5-yr median","description":"Every tracked western reservoir, gauge, basin and drought reading on one US map.","page_url":"https://the-waterline.com/heatmap","headline":null,"unit":null,"data_through":null,"frequency":"Daily","status":"current","source":"US Geological Survey (USGS)","provenance":{"source":"US Geological Survey (USGS)","series":"Daily mean streamflow at every tracked gauge, vs the 5-yr median for the date","geography":"The western United States","period":"Daily mean","frequency":"Daily"},"citation":"The Waterline's map of western reservoir storage, streamflow and drought, gauge readings through Nov 9, 2026. The Waterline. https://the-waterline.com/heatmap","series":[],"tables":[{"caption":"Streamflow at every gauge on the map","columns":["Gauge","State","Discharge","vs 5-yr median","As of"],"rows":[["American River at Fair Oaks","California","1,250 cfs","+3%","Nov 9, 2026"],["Bear River near Corinne","Utah","662 cfs","-18%","Nov 9, 2026"],["Bighorn River at Kane","Wyoming","858 cfs","-40%","Nov 9, 2026"],["Boise River at Glenwood Bridge","Idaho","237 cfs","-10%","Nov 9, 2026"],["Carson River near Carson City","Nevada","67 cfs","-30%","Nov 9, 2026"],["Colorado River at Lees Ferry","Arizona","6,480 cfs","-22%","Nov 6, 2026"],["Colorado River near Cisco","Utah","4,010 cfs","+26%","Nov 9, 2026"],["Columbia River at International Boundary","Washington","77,100 cfs","-4%","Nov 9, 2026"],["Columbia River at The Dalles","Oregon","110,000 cfs","+4%","Nov 9, 2026"],["Dolores River near Cisco","Utah","685 cfs","+386%","Nov 9, 2026"],["Green River at Green River","Utah","4,160 cfs","+89%","Nov 9, 2026"],["Gunnison River below Gunnison Tunnel","Colorado","204 cfs","-37%","Nov 9, 2026"],["Klamath River near Klamath","California","2,770 cfs","-48%","Nov 9, 2026"],["Rio Grande at Otowi Bridge","New Mexico","3,090 cfs","+252%","Nov 9, 2026"],["Rio Grande Floodway at San Marcial","New Mexico","2,040 cfs","+450%","Nov 9, 2026"],["Sacramento River at Bend Bridge","California","6,450 cfs","+1%","Nov 9, 2026"],["Sacramento River at Verona","California","7,450 cfs","-1%","Nov 9, 2026"],["Salmon River at White Bird","Idaho","3,920 cfs","-11%","Nov 9, 2026"],["Salt River near Roosevelt","Arizona","2,560 cfs","+1,678%","Nov 9, 2026"],["San Joaquin River near Vernalis","California","1,200 cfs","+7%","Nov 9, 2026"],["San Juan River at Farmington","New Mexico","3,220 cfs","+367% (3-yr)","Nov 9, 2026"],["San Juan River near Archuleta","New Mexico","197 cfs","-37%","Nov 8, 2026"],["Snake River above Jackson Lake","Wyoming","268 cfs","+9%","Nov 9, 2026"],["Snake River at Weiser","Idaho","9,300 cfs","-10%","Nov 9, 2026"],["Truckee River at Vista","Nevada","511 cfs","+3%","Nov 9, 2026"],["Willamette River at Portland","Oregon","10,900 cfs","-61%","Nov 9, 2026"],["Yampa River near Maybell","Colorado","279 cfs","-5%","Nov 9, 2026"]],"footnote":"Daily mean discharge from USGS, compared with the median for the same date over up to five prior years. Gauges with their own page are linked."}]}