Middle Potomac-Anacostia-Occoquan HUC8 02070010
A 3,375 km² sub-basin of the Mid-Atlantic region in DC, MD, VA. Drought coverage is from the US Drought Monitor (map of 2026-10-13); streamflow classes place each USGS gauge's latest reading against its own day-of-year record.
Health score
75
Healthy
Drought index
44
Abnormally dry
Area in D2+
0%
0% exceptional (D4)
Gauges below normal
27%
of 15 reporting
Median flow
80%
p36 of record
Water assets
4,324
14 springs · 1,483 wells
USGS gauges (28)
- NORTHEAST BRANCH ANACOSTIA RIVER AT RIVERDALE, MD0164950010 cfsp7 · much below normal
- Northwest Branch Anacostia River nr Colesville, MD016505003 cfsp10 · much below normal
- PAINT BRANCH TRIBUTARY NEAR COLESVILLE, MD016491500 cfsp12 · below normal
- SLIGO CREEK NEAR TAKOMA PARK, MD016508001 cfsp23 · below normal
- PAINT BRANCH NEAR COLLEGE PARK, MD016491903 cfsp25 · normal
- WATTS BRANCH AT WASHINGTON, DC016518001 cfsp32 · normal
- PISCATAWAY CREEK AT PISCATAWAY, MD016536005 cfsp34 · normal
- ACCOTINK CREEK NEAR ANNANDALE, VA016540004 cfsp36 · normal
- LONG BRANCH NEAR ANNANDALE, VA016545001 cfsp36 · normal
- FOURMILE RUN AT ALEXANDRIA, VA016525004 cfsp37 · normal
- HICKEY RUN AT NATIONAL ARBORETUM AT WASHINGTON, DC016517700 cfsp43 · normal
- Rock Creek at Joyce Rd Washington, DC0164801020 cfsp50 · normal
- CAMERON RUN AT ALEXANDRIA, VA0165300010 cfsp51 · normal
- FLATLICK BRANCH ABOVE FROG BRANCH AT CHANTILLY, VA016569032 cfsp53 · normal
- CEDAR RUN NEAR CATLETT, VA0165600013 cfsp59 · normal
- TURKEY BRANCH NEAR ROCKVILLE, MD01647850no readingno long-term record
- ROCK CREEK AT SHERRILL DRIVE WASHINGTON, DC0164800082 cfsno long-term record
- Luzon Branch above Rock Creek at Washington DC016480110 cfsno long-term record
- NORTHWEST BRANCH ANACOSTIA RIVER AT BRENTWOOD, MD0165100311 cfsno long-term record
- BEAVERDAM CREEK NEAR CHEVERLY, MD016517305 cfsno long-term record
- ANACOSTIA RIVER AT KENILWORTH AT WASHINGTON, DC01651760-994 cfsno long-term record
- Anacostia River nr Buzzard Point at Washington, DC01651827-476 cfsno long-term record
- FOUR MILE RUN AT HWY 29 AT FALLS CHURCH, VA016520900 cfsno long-term record
- TRIPPS RUN AT FALLS CHURCH, VA016526200 cfsno long-term record
- MEETINGHOUSE BRANCH AT CAMP SPRINGS, MD016536200 cfsno long-term record
- N BRANCH LITTLE HUNTING CREEK NR GUM SPRINGS, VA016537190 cfsno long-term record
- LONG BRANCH AT OLLEY LANE NR FAIRFAX, VA016541071 cfsno long-term record
- ACCOTINK CREEK AT KEENE MILL RD AT SPRINGFIELD, VA016546706 cfsno long-term record
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-10-21 | 44 | 0 | 4/15 | p36 |
| 2026-10-20 | 44 | 0 | 3/15 | p42 |
| 2026-10-19 | 44 | 0 | 2/15 | p51 |
| 2026-10-18 | 44 | 0 | 0/15 | p75 |
| 2026-10-17 | 44 | 0 | 0/15 | p82 |
| 2026-10-16 | 44 | 0 | 2/15 | p53 |
| 2026-10-15 | 57 | 0 | 1/15 | p49 |
| 2026-10-14 | 57 | 0 | 0/15 | p61 |
| 2026-10-13 | 57 | 0 | 0/14 | p84 |
| 2026-10-12 | 57 | 0 | 0/14 | p97 |
| 2026-10-11 | 57 | 0 | 5/14 | p30 |
| 2026-10-10 | 57 | 0 | 5/14 | p29 |
| 2026-10-09 | 57 | 0 | 6/14 | p28 |
| 2026-10-08 | 57 | 0 | 5/14 | p33 |
Top water assets
- 66Lake Frankreservoir
- 66New Bald Eagle Road Swmreservoir
- 66Greencastle Lakes Dam (Ballinger Drive)reservoir
- 66Lake Needwoodreservoir
- 66Parker Farms Damreservoir
- 66Winslow Damreservoir
- 66Contee Main Settling Pondreservoir
- 65Sligo Creek Near Takoma Park, Mdriver
- 65Piscataway Creek At Piscataway, Mdriver
- 65Paint Branch Near College Park, Mdriver