Cibuco-Guajataca HUC8 21010002
A 3,162 km² sub-basin of the Caribbean region in PR. 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
56
Moderate
Drought index
154
Moderate
Area in D2+
26.88%
0% exceptional (D4)
Gauges below normal
67%
of 18 reporting
Median flow
49%
p16 of record
Water assets
19
8 springs · 0 wells
USGS gauges (24)
- RIO GRANDE DE ARECIBO NR SAN PEDRO, PR5002760059 cfsp4 · much below normal
- RIO GRANDE DE ARECIBO ABV UTUADO, PR5002170025 cfsp6 · much below normal
- RIO GRANDE DE MANATI AT CIALES, PR5003500038 cfsp6 · much below normal
- RIO SALIENTE AT COABEY NR JAYUYA, PR500251556 cfsp6 · much below normal
- RIO TANAMA NR UTUADO, PR5002800018 cfsp6 · much below normal
- RIO TANAMA AT CHARCO HONDO, PR5002840048 cfsp8 · much below normal
- RIO CAONILLAS AT PASO PALMA, PR5002602533 cfsp10 · much below normal
- RIO GUAJATACA AT LARES, PR500105003 cfsp13 · below normal
- RIO CAMUY NR BAYANEY, PR5001480063 cfsp16 · below normal
- RIO BAUTA NR OROCOVIS, PR500340008 cfsp16 · below normal
- CANAL DE DERIVACION AT LAGO DE GUAJATACA, PR5001100052 cfsp20 · below normal
- CANAL PRINCIPAL DIVERSION BLW FOREBAY, ISABELA, PR18274306700420027 cfsp22 · below normal
- RIO LIMON ABV LAGO DOS BOCAS, PR5002700035 cfsp27 · normal
- RIO GRANDE DE ARECIBO BLW UTUADO, PR50024950121 cfsp31 · normal
- RIO CIBUCO AT VEGA BAJA, PR5003950076 cfsp54 · normal
- CANAL MOCA ABV AGUADILLA PLANT, AGUADILLA, PR500111286 cfsp58 · normal
- CANAL DE MOCA ABV LAGO REGULADOR (E13) ISABELA, PR5001108525 cfsp59 · normal
- RIO GUAJATACA BLW LAGO GUAJATACA, PR500112007 cfsp60 · normal
- CANAL PRINCIPAL DIVERSION ABV. LAGO GUERRERO, PR18283006703590040 cfsno long-term record
- RIO GUAJATACA ABV MOUTH NR QUEBRADILLAS, PR5001140027 cfsno long-term record
- RIO GRANDE DE MANATI AT HWY 155 NR MOROVIS, PR5003100018 cfsno long-term record
- RIO GRANDE DE MANATI NR MANATI, PR5003700083 cfsno long-term record
- RIO GRANDE DE MANATI AT HWY 2 NR MANATI, PR50038100no readingno long-term record
- RIO COROZAL AT COROZAL, PR500383003 cfsno long-term record
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-09-07 | 154 | 26.88 | 12/18 | p16 |
Top water assets
- 69Caonillas Damreservoir
- 69North Coast Limestone Aquifer — Arecibo Regionaquifer
- 67Matrullas Damreservoir
- 67Garzas Damreservoir
- 67Guajataca Damreservoir
- 67Dos Bocas Damreservoir
- 67Guineo Damreservoir
- 66Vivi Damreservoir
- 66Pellejas Damreservoir
- 66Lago Reguladorreservoir