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Quality Products & Quality Service

WIN_SW — Computation of Surface Water

Win_SW is a complete surface water computation  package. 

Data Input

Digitized input from charts is supported using many manufacture’s digitizing equipment.  Direct connection with ACRO and Stevens Data Loggers and readers permits rapid download of logged data.  Both delimited and date/time stamped formatted data files are easily read, making most logger output files directly accessible without modification.  All input routines have the capability of modifying the beginning and ending date and data values.

 

Ratings and Formulas

Rating curves are defined with up to 200 points.  Five ratings per stations are permitted.  The formula editor accommodates  simple and compound weirs.  A slope area formula for rectangular channels is also included.

 

Datum Corrections and Shifts

Datum Corrections, Time shifts, and Stage Shifts (3-point) are entered by individual editors, each with a 150 record capacity.  Shifts and corrections are optionally included in  the computation process.

 

Computation

Win_sw computes the instantaneous and daily mean discharge from stage, rating, and shift data.  Reservoir stations are supported by computation of mean daily stage and mean capacity.  Daily maximums and minimums values  are also tabulated on the main PC Sheet report and are available as ASCII file outputs.

 

Data Export

Several ASCII file exports are available for import to spreadsheets, mainframes, and databases.  Additionally, discharges and mean stage are exported to Microsoft’s Excel for charting.

The user is able to import data from various devices in many common formats.   Ratings and shifts are easily entered and discharge values accurately  computed.  Editors for Daily Mean Discharge (Reservoir Capacity), Gage Height (Reservoir Elevation), and Daily Mean Gage Heights are present.  Additionally, the program prints the  reports necessary for hydrological water workup in the United States.  The DOS predecessor of this program, Western Hydrological Systems’ Surface Water Program,  has been used for many years  to fulfill the requirements of USGS records review by many public and private entities. 

WIN_SW Main Menu

Rating Plot

Pat Cawood of WHS