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 15, 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 | 1,780 cfs | +29% | Oct 15, 2026 |
| Bear River near Corinne | Utah | 948 cfs | +70% | Oct 15, 2026 |
| Bighorn River at Kane | Wyoming | 954 cfs | -42% | Oct 15, 2026 |
| Boise River at Glenwood Bridge | Idaho | 270 cfs | +8% | Oct 15, 2026 |
| Carson River near Carson City | Nevada | 32 cfs | -39% | Oct 15, 2026 |
| Colorado River at Lees Ferry | Arizona | 6,580 cfs | -15% | Oct 15, 2026 |
| Colorado River near Cisco | Utah | 5,270 cfs | +50% | Oct 15, 2026 |
| Columbia River at International Boundary | Washington | 65,700 cfs | +6% | Oct 15, 2026 |
| Columbia River at The Dalles | Oregon | 84,800 cfs | -9% | Oct 15, 2026 |
| Dolores River near Cisco | Utah | 984 cfs | +741% | Oct 15, 2026 |
| Green River at Green River | Utah | 4,770 cfs | +127% | Oct 15, 2026 |
| Gunnison River below Gunnison Tunnel | Colorado | 240 cfs | -31% | Oct 15, 2026 |
| Klamath River near Klamath | California | 2,540 cfs | -7% | Oct 15, 2026 |
| Rio Grande at Otowi Bridge | New Mexico | 430 cfs | +8% | Oct 15, 2026 |
| Rio Grande Floodway at San Marcial | New Mexico | 39 cfs | +3% | Oct 15, 2026 |
| Sacramento River at Bend Bridge | California | 6,760 cfs | -7% | Oct 15, 2026 |
| Sacramento River at Verona | California | 8,370 cfs | -5% | Oct 15, 2026 |
| Salmon River at White Bird | Idaho | 3,990 cfs | +14% | Oct 15, 2026 |
| Salt River near Roosevelt | Arizona | 763 cfs | +200% | Oct 15, 2026 |
| San Joaquin River near Vernalis | California | 927 cfs | -45% | Oct 15, 2026 |
| San Juan River at Farmington | New Mexico | 2,400 cfs | +274% (3-yr) | Oct 15, 2026 |
| San Juan River near Archuleta | New Mexico | 276 cfs | -47% | Oct 15, 2026 |
| Snake River above Jackson Lake | Wyoming | 284 cfs | +20% | Oct 15, 2026 |
| Snake River at Weiser | Idaho | 9,070 cfs | -15% | Oct 15, 2026 |
| Truckee River at Vista | Nevada | 337 cfs | -1% | Oct 15, 2026 |
| Willamette River at Portland | Oregon | 7,720 cfs | -34% | Oct 15, 2026 |
| Yampa River near Maybell | Colorado | 364 cfs | +27% | Oct 15, 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.