IOWDM - Input and Output for a Watershed Data Management (WDM) file
VERSION/DATE: Version Version 4.0 02/08/2001
OPERATING SYSTEM: DOS
DOCUMENTATION (46 Pages):
RELATED DOCUMENTATION (see ANNIE User's Manual)
IOWDM is used in support of projects that use a WDM file for data management.
DOS-based computers having a math coprocessor and 4 mb of memory (supported: IBM-compatible computers with a 386 or greater processor).
IOWDM is designed to reformat data to and from a WDM file. Data in selected WATSTORE card-image formats can be added to a WDM file.
A WDM file is a binary, direct-access file used to store hydrologic, hydraulic, meteorologic, water-quality, and physiographic data. The WDM file is organized into data sets. Each data set contains a specific type of data, such as streamflow at a specific site or air temperature at a weather station. Each data set contains attributes that describe the data, such as station identification number, time step of data, latitude, and longitude. A WDM file may contain a single data set or as many as 200,000 data sets. A data set may be described by a few attributes or by hundreds of attributes. Data can be added, deleted, and modified without restructuring the data in the file. Space from deleted data sets is reused.
Data in the following WATSTORE card-image formats may be written to a WDM file:
daily values (3 cards with optional Z, H, N, and 2 cards)
unit values (B-cards with optional Z, H, N, and 2 cards)
basin and streamflow characteristics (1 and 2 cards)
n-day high and/or low flow (2 and 3 cards)
annual peak flows (3 and 4 cards with optional Z, H, N, and 2 cards)
The IOWDM file writes data from formatted input files to the WDM file. No other output options are currently supported.