Muddy HUC8 15010012

A 4,696 km² sub-basin of the Lower Colorado region in NV. Drought coverage is from the US Drought Monitor (map of 2026-09-01); streamflow classes place each USGS gauge's latest reading against its own day-of-year record.

Health score

Moderate

Drought index

206

Severe

Area in D2+

6.11%

0% exceptional (D4)

Gauges below normal

57%

of 7 reporting

Median flow

94%

p10 of record

Water assets

528

96 springs · 153 wells

USGS gauges (8)

PEDERSON SPGS NR MOAPA, NV
094159100 cfsp8 · much below normal
WARM SPGS W NR MOAPA, NV
094159203 cfsp9 · much below normal
WARM SPGS CONFL AT IVERSON FLUME NR MOAPA, NV
094159274 cfsp10 · much below normal
PEDERSON E SPGS NR MOAPA, NV
094159080 cfsp10 · below normal
MUDDY RV NR GLENDALE, NV
0941900036 cfsp59 · normal
MUDDY RV NR MOAPA, NV
0941600040 cfsp59 · normal
MUDDY SPGS AT LDS FARM NR MOAPA, NV
094159008 cfsp67 · normal
WARM SPGS W INFLOW NR MOAPA, NV
094159153 cfsno long-term record

Recent conditions

Date	DSCI	D2+ %	Gauges low	Flow pct
2026-09-07	206	6.11	4/7	p10

Top water assets

View on the map All Lower Colorado sub-basins