The purpose for a hydrologic observations database is to store hydrologic observations data in a system designed to facilitate data retrieval for integrated analysis of information collected by multiple investigators. The Hydrologic Observations Data Model (HODM) provides a standard template schema for a hydrologic observations database. It is intended to provide a standard format to facilitate the effective sharing of information between investigators and to facilitate analysis of information within a single study area or hydrologic observatory, or across hydrologic observatories and regions. The hydrologic observations data model is designed to store hydrologic observations and sufficient ancillary information (metadata) about the observations to allow them to be unambiguously interpreted and used and provide traceable heritage from raw measurements to usable information. A relational database format is used to provide querying capability to facilitate data retrieval in support of a diverse range of analyses.

Downloads:

HIS Status report. [more information]

CUAHSI Community Hydrologic Observations Data Model Working Design Specifications Document (Version 3, June 23, 2006). [more information]

Hydrologic Observations Data Model (Version 1 presented as chapter 6 of the HIS Status report). [more information]

ODM version 3 schema. [download]

SQL server version 2005 of the OD. [download]

SDSC Downloads Folder containing Schema Implementations of the HODM. [more information]

Contact Information:

Jeff Horsburgh (jeff.horsburgh@usu.edu), Utah Water Research Laboratory, Utah State University, Logan, Utah.

David Tarboton (david.tarboton@usu.edu), Civil and Environmental Engineering, Utah State University, Logan, Utah.

David Maidment (maidment@mail.utexas.edu) Center for Research in Water Resources, University of Texas at Austin, Austin, Texas.