Raritan HUC8 02030105
A 2,863 km² sub-basin of the Mid-Atlantic region in NJ. 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
85
Healthy
Drought index
0
None
Area in D2+
0%
0% exceptional (D4)
Gauges below normal
0%
of 24 reporting
Median flow
144%
p64 of record
Water assets
5,417
7 springs · 985 wells
USGS gauges (33)
- South B Rockaway Creek at Whitehouse Station NJ013996706 cfsp26 · normal
- Green Brook at Seeley Mills NJ014034002 cfsp27 · normal
- Spruce Run at Clinton NJ0139680019 cfsp30 · normal
- West Branch Middle Brook near Martinsville NJ014031500 cfsp37 · normal
- South Branch Raritan River at Stanton NJ0139700099 cfsp40 · normal
- Bound Brook at Middlesex NJ0140390025 cfsp41 · normal
- Lawrence Brook at Westons Mills NJ0140503018 cfsp44 · normal
- Mulhockaway Creek at Van Syckel NJ013966607 cfsp48 · normal
- Pike Run at Belle Mead NJ014016502 cfsp52 · normal
- South Branch Raritan River near High Bridge NJ0139650052 cfsp54 · normal
- North Branch Raritan River near Raritan NJ01400000137 cfsp61 · normal
- North Branch Raritan River near Far Hills NJ0139850023 cfsp63 · normal
- Middle Brook at Burnt Mills NJ013991003 cfsp64 · normal
- Raritan River at Manville NJ01400500347 cfsp65 · normal
- Deep Run at Old Bridge NJ0140605011 cfsp65 · normal
- Spruce Run at Main Street at Glen Gardner NJ0139658210 cfsp66 · normal
- Raritan River below Calco Dam at Bound Brook NJ01403060472 cfsp66 · normal
- Lamington (Black) River near Pottersville NJ0139950035 cfsp66 · normal
- Stony Brook at Watchung NJ014035405 cfsp73 · normal
- Manalapan Brook at Spotswood NJ0140540046 cfsp75 · above normal
- Stony Brook at Princeton NJ0140100023 cfsp76 · above normal
- Neshanic River at Reaville NJ0139800013 cfsp80 · above normal
- Millstone River at Blackwells Mills NJ01402000230 cfsp80 · above normal
- Royce Brook at Hamilton Road near Manville NJ014026307 cfsp87 · above normal
- South Branch Raritan River at Four Bridges NJ0139619016 cfsno long-term record
- Holland Brook at Readington NJ0139810731 cfsno long-term record
- Lamington (Black) River at Succasunna NJ013991909 cfsno long-term record
- Lamington (Black) River near Ironia NJ0139920011 cfsno long-term record
- Peters Brook near Raritan NJ014003006 cfsno long-term record
- Millstone River at Carnegie Lake at Princeton NJ01401301187 cfsno long-term record
- Green Brook at Plainfield NJ0140350010 cfsno long-term record
- East Br Stony Brook at Best Lake at Watchung NJ014035351 cfsno long-term record
- Delaware and Raritan Canal at Kingston NJ0146050035 cfsno long-term record
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-10-19 | 0 | 0 | 0/24 | p64 |
| 2026-10-18 | 0 | 0 | 0/24 | p73 |
| 2026-10-17 | 0 | 0 | 0/24 | p76 |
| 2026-10-16 | 0 | 0 | 2/24 | p65 |
| 2026-10-15 | 0 | 0 | 1/24 | p78 |
| 2026-10-14 | 0 | 0 | 1/24 | p81 |
| 2026-10-13 | 0 | 0 | 1/24 | p90 |
| 2026-10-12 | 0 | 0 | 0/24 | p97 |
| 2026-10-11 | 0 | 0 | 3/24 | p54 |
| 2026-10-10 | 0 | 0 | 2/24 | p55 |
| 2026-10-09 | 0 | 0 | 3/24 | p58 |
| 2026-10-08 | 0 | 0 | 3/24 | p63 |
| 2026-10-07 | 0 | 0 | 2/24 | p62 |
| 2026-10-06 | 0 | 0 | 1/24 | p67 |
Top water assets
- 73Early Mesozoic Basin Aquifer — Newark Basinaquifer
- 66Spruce Run Reservoir Damreservoir
- 66Pleasant Valley Lake Damreservoir
- 66Farrington Damreservoir
- 66Silver Lake Damreservoir
- 66East Branch Reservoir Damreservoir
- 65Assiscong Creekriver
- 65North Branch Raritan Riverriver
- 65Holland Brook At Readington Njriver
- 65Westons Arch Damreservoir