APDRC CPC Global Daily Precipitation
Asia-Pacific Data-Research Center (Univ. of Hawaii) distribution of the CPC Global Unified gauge-based daily precipitation analysis (1979-present, 0.5 degree), accessible via OPeNDAP, LAS and ERDDAP.
apdrc.soest.hawaii.edu
At a glance
- Region
- United States (Global)
- Coverage
- 1979-present, 0.5 degree daily
- Access
- Free
- Category
- Academic
- Last updated
- 2025
What's inside
- Precipitation
- Gauge analysis
- Gridded climate
Terms explained
What you can do with it
Typical work that data of this type supports.
- 01
Design flows
Estimate 1-in-50 and 1-in-100 year floods for bridges, culverts and spillways.
Because it has: Gauge analysis
- 02
Low flows
Set environmental flows and check what is left in the river in a dry year.
- 03
Design storms
Build rainfall intensity-duration-frequency curves for drainage design.
Because it has: Precipitation
Where AI adds value
Ideas for machine learning and AI agents built on this kind of data.
- 01
Flow forecasting
Train LSTM-style models on past records to forecast river levels and flow days ahead.
- 02
Ungauged basins
Combine with catchment data to estimate flow where there is no gauge.
- 03
Downscaling
Turn coarse rainfall grids into field or ward scale estimates.
Machine access and documentation
Open API
OPeNDAP/LAS/ERDDAP endpoints on apdrc.soest.hawaii.edu
Licence: Open data
Listed in our registry of open water APIs, which WaterDataGPT can query live.
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