The map
The West on one map
Every reading on the site, placed where it lives: drought by state, storage at each dam, flow at each gauge. Color is condition vs the 5-yr median. Hover a marker for its reading and click through to its page; the table under the map lists every gauge.
Data through Oct 28, 2026
Drought — share of area in D1 or worse
0%50%100%
Storage & flow — vs the 5-yr median
-60%normal+60%
Shapes
reservoir (size = capacity) gauge basin rollup county drought
Gray states aren't tracked here — The Waterline covers the 11 western states. Allocations are a policy percentage, not a place, so they list as a panel.
| Gauge | State | Discharge | vs 5-yr median | As of |
|---|---|---|---|---|
| American River at Fair Oaks | California | 1,200 cfs | -12% | Oct 28, 2026 |
| Bear River near Corinne | Utah | 617 cfs | -16% | Oct 28, 2026 |
| Bighorn River at Kane | Wyoming | 836 cfs | -45% | Oct 28, 2026 |
| Boise River at Glenwood Bridge | Idaho | 229 cfs | -10% | Oct 28, 2026 |
| Carson River near Carson City | Nevada | 53 cfs | -37% | Oct 28, 2026 |
| Colorado River at Lees Ferry | Arizona | 6,480 cfs | -18% | Oct 26, 2026 |
| Colorado River near Cisco | Utah | 4,740 cfs | +23% | Oct 28, 2026 |
| Columbia River at International Boundary | Washington | 57,300 cfs | -13% | Oct 28, 2026 |
| Columbia River at The Dalles | Oregon | 86,900 cfs | -5% | Oct 28, 2026 |
| Dolores River near Cisco | Utah | 930 cfs | +508% | Oct 28, 2026 |
| Green River at Green River | Utah | 3,890 cfs | +65% | Oct 28, 2026 |
| Gunnison River below Gunnison Tunnel | Colorado | 273 cfs | -19% | Oct 28, 2026 |
| Klamath River near Klamath | California | 2,650 cfs | -18% | Oct 28, 2026 |
| Rio Grande at Otowi Bridge | New Mexico | 4,270 cfs | +749% | Oct 28, 2026 |
| Rio Grande Floodway at San Marcial | New Mexico | 2,180 cfs | +1,424% | Oct 28, 2026 |
| Sacramento River at Bend Bridge | California | 6,810 cfs | -12% | Oct 28, 2026 |
| Sacramento River at Verona | California | 7,180 cfs | -19% | Oct 28, 2026 |
| Salmon River at White Bird | Idaho | 4,250 cfs | -8% | Oct 28, 2026 |
| Salt River near Roosevelt | Arizona | 755 cfs | +494% | Oct 28, 2026 |
| San Joaquin River near Vernalis | California | 1,810 cfs | +6% | Oct 28, 2026 |
| San Juan River at Farmington | New Mexico | 2,870 cfs | +251% (3-yr) | Oct 28, 2026 |
| San Juan River near Archuleta | New Mexico | 302 cfs | -26% | Oct 28, 2026 |
| Snake River above Jackson Lake | Wyoming | 292 cfs | +20% | Oct 28, 2026 |
| Snake River at Weiser | Idaho | 9,640 cfs | -10% | Oct 28, 2026 |
| Truckee River at Vista | Nevada | 408 cfs | -14% | Oct 28, 2026 |
| Willamette River at Portland | Oregon | 8,800 cfs | -54% | Oct 28, 2026 |
| Yampa River near Maybell | Colorado | 232 cfs | -16% | Oct 28, 2026 |
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.