Buffalo-Eighteenmile HUC8 04120103
A 1,850 km² sub-basin of the Great Lakes region in NY. 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
69
Moderate
Drought index
100
Moderate
Area in D2+
0%
0% exceptional (D4)
Gauges below normal
33%
of 3 reporting
Median flow
47%
p27 of record
Water assets
748
2 springs · 483 wells
USGS gauges (6)
- CAZENOVIA CREEK AT EBENEZER NY0421550021 cfsp18 · below normal
- BUFFALO CREEK AT GARDENVILLE NY0421450025 cfsp27 · normal
- CAYUGA CREEK NEAR LANCASTER NY0421500014 cfsp33 · normal
- BIG SISTER CREEK AT EVANS CENTER NY042140603 cfsno long-term record
- EIGHTEENMILE CREEK AT HAMBURG NY042142221010 cfsno long-term record
- S BR EIGHTEENMILE CR AT BLEY RD AT EDEN VALLEY042142314 cfsno long-term record
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-10-20 | 100 | 0 | 1/3 | p27 |
| 2026-10-19 | 100 | 0 | 0/3 | p35 |
| 2026-10-18 | 100 | 0 | 0/3 | p53 |
| 2026-10-17 | 100 | 0 | 0/3 | p74 |
| 2026-10-16 | 100 | 0 | 3/3 | p22 |
| 2026-10-15 | 100 | 0 | 2/3 | p21 |
| 2026-10-14 | 100 | 0 | 1/3 | p27 |
| 2026-10-13 | 100 | 0 | 2/3 | p19 |
| 2026-10-12 | 100 | 0 | 2/3 | p18 |
| 2026-10-11 | 100 | 0 | 2/3 | p18 |
| 2026-10-10 | 100 | 0 | 2/3 | p17 |
| 2026-10-09 | 100 | 0 | 2/3 | p21 |
| 2026-10-08 | 100 | 0 | 1/3 | p35 |
| 2026-10-07 | 100 | 0 | 2/3 | p20 |
Top water assets
- 66Green Lake Damreservoir
- 65Cazenovia Creek At Ebenezer Nyriver
- 65Hickory Lake Damreservoir
- 65Buffalo Creek At Gardenville Nyriver
- 65Eighteenmile Creek At Hamburg Nyriver
- 65Camp Holland Hills #2 Damreservoir
- 65S Br Eighteenmile Cr At Bley Rd At Eden Valleyriver
- 65Mckinley Mall Retention Pond Damreservoir
- 65Camp Schoellkopf #2 Damreservoir
- 65Warren Bippert Pond Damreservoir