IFMHA

The IFMHA (Inventory of Field Measurement for Hydraulic Attributes) dataset offers an extensive collection of fluvial hydraulic and geometry data. It comprises over 2.8 million field measurements, meticulously gathered from 10,050 USGS gage sites throughout the United States. This rich historical record covers a significant period, with measurements dating from 1845 up to 2022.

This dataset significantly enhances existing resources by extending the HYDRoSWOT dataset. It incorporates the full spectrum of field measurements available within the National Water Information System (NWIS) and integrates relevant attributes from the NHDPlusV21 dataset. The repository provides clear instructions for accessing the data, including methods like Git LFS and an alternative Google Drive download link.

IFMHA is a valuable resource for researchers and practitioners in hydrology, geomorphology, and environmental sciences, offering detailed insights into river characteristics and streamflow dynamics across a vast geographical area.