Data Exchange Description
The OWIR data exchange allows Partners to submit Integrated Reporting [303(d)/305(b)] water quality assessment data. This data set is taken from the Partner’s assessment data management system and submitted through its node for inclusion in EPA’s Assessment, TMDL Tracking And ImplementatioN System (ATTAINS).
The OWIR data flow is used in conjunction with the NHDEvent data flow to exchange spatial representations of the water assessment units reported in the OWIR-ATT submissions along with links to the underlying National Hydrography Dataset. These links, which are stream (reach) addresses, are referred to as ‘NHD events.’ These spatial data are submitted through the Partner’s node for inclusion in EPA’s Reach Address Database (RAD). While the NHDEvent data flow was initially developed for use with the OWIR data flow, it can also be used for the submission of any NHD events that link other program data, such as STORET WQX, to the underlying NHD. Information on EPA’s integrated information system for the nation’s surface waters is available at: Watershed Assessment, Tracking and Environmental Results (WATERS).
NOTE: (Updated December 12, 2014) ATTAINS is currently going through a redesign within the scope of the Water Quality Framework and in 2018 will replace the OWIR-ATT data flow. EN Partners currently using the OWIR-ATT data flow are eligible for receiving grants to provide data via the new ATTAINS data flow. EPA recommends that Partners do not pursue developing an OWIR-ATT data flow for the 2016 Integrated Reporting cycle or beyond.
To stay up-to date on the status of the new ATTAINS data flow, please visit the ATTAINS Data Exchange page.
EPA updated the OWIR schema to meet reporting specifications and to automate the receipt, review, and processing of assessment decision data. EPA accepts test and production submissions using OWIR and NHDEvent.
The OWIR schema and supporting documentation have been approved for use on the Exchange Network. The most recent version is v2.0.