The following dialog allows for selection of tables to be created. The HEC-RAS River Analysis System (HEC, 1995a) is intended to be the successor to the current steady-flow HEC-2 Water Surface Profiles Program (HEC, 1990).
Pf 1 hec ras software#
Users create new tables using Database -> Create River Database Tables or tool. Hydrologic Engineering Center, US Army Corps of Engineers Introduction The Hydrologic Engineering Center (HEC) is developing next generation software for one-dimensional river hydraulics. There are three tables always required for a model creation: river lines, cross-sections and flow paths. If a table needs a user specified attribute, it is given in the User defined attributes column. The table below lists river database tables created by RiverGIS. There is a table for river lines, cross-sections etc. Model geometry data are stored in a river database tables. When a schema is created from outside the RiverGIS use the Database > Refresh Connections List or the tool. If a connection or schema was created in a previous session, it can be chosen from the DB Connection or Schema dropdown lists. RiverGIS will automatically switch to the newly created schema, as shown below. Users can create a schema in a number of ways: using pgAdmin, QGIS’ own DB Manager or from within RiverGIS dialog by choosing Database > Create New Schema or clicking tool icon from Database toolbar. Therefore, the first step is to create a new schema for a model. We are especially interested to hear how you have addressed difficult ice problems with HEC-RAS. Please post your questions, comments, and insights here.
Each model goes to its own schema, a kind of database directory for data grouping. The River Ice Modeling forum was developed for those who use HEC-RAS to simulate river ice covers and river ice jams. Until a database and schema are set in RiverGIS window, most of the tools are inactive.Ī single PostgreSQL database can be used to store many models geometries. A term river database refers to a database used by RiverGIS.
A fundamental difference from HEC-GeoRAS is that the RiverGIS uses a PostgreSQL database with PostGIS spatial extension for data storage (see Requirements for installation instructions). A total of 15 cross sections were used to represent the channel geometry over the 7-mile reach.