Presentation given at the CUAHSI 2017 Conference on Informatics http://www.cvent.com/events/2017-cuahsi-conference-on-hydroinformatics-swimming-in-data-without-drowning-in-the-deluge/event-summary-1740a3d146f0425ea5dcab0b35731f68.aspx

HydroShare is an online, collaboration system for sharing of and collaboration around hydrologic data, analytical tools, and models, which are “resources” defined by standardized content types for data formats and models commonly used in hydrology. With HydroShare one can: share one’s data and models with colleagues; manage who has access to the content that is shared; share, access, visualize and manipulate a broad set of hydrologic data types and models; use the web services application programming interface (API) to program automated and client access; publish data and models and obtain a citable digital object identifier (DOI); aggregate your resources into collections; discover and access data and models published by others; and use web apps to visualize, analyze and run models on data in HydroShare. The integrated Rule-Oriented Data System (iRODS, see http://irods.org/) is an open-source distributed data management system with worldwide adoption and is being used to manage data content within HydroShare. iRODS supports distributed shared data collections and has been used to enable regional, national, and international research collaborations. Through iRODS ability to federate with other iRODS datagrids, HydroShare is able to federate with and enable its users access to important national data sets such as an extended archive of the NOAA National Water Model. The HydroShare iRODS federation model also enables extended storage models so as to allow large organizations such as University campuses to provision their own storage and set their own quotas within the existing HydroShare framework, thus presenting this federated extended storage in a manner transparent to the end user. Web apps that federate or join with the HydroShare data grid may use iRODS rapid data transfer functionality to access data in HydroShare. Furthermore, iRODS enables HydroShare users to efficiently transfer data and resources into and out of HydroShare that are tens of gigabytes in size, including if these data or resources are in other iRODS-based national cyberinfrastructure such as CyVerse. In this presentation, we will describe these and other capabilities as an extended storage ecosystem for HydroShare.