Northeast Wyoming Basins Water Plan
Spreadsheet Models

There are sixteen spreadsheet workbooks, one for each of three hydrologic conditions(wet, normal, dry) and one master for each of the four distinct areas:

• Beaver Creek from Source to Diversions above Stockade
• Belle Fourche River above Dry Creek to the Stateline
• Cheyenne River from Dry Fork to the Stateline
• Redwater Creek from Sand Creek near Beulah to the Stateline

For further information including both a user's guide and engineering documentation of the models please refer to the Spreadsheet Model Development and Calibration.

Steps for Downloading the Models

The three workbooks (wet, dry and normal years) for each area are yoked together with a simple menu-driven graphical user interface (GUI), effectively creating four area models. In addition, the spreadsheet models are stored as zipped Microsoft Excel files using WinZip compression software. An evaluation version of WinZip may be downloaded at http://www.winzip.com/download.htm

• Download the models by clicking on the file name and saving to your local directory. Depending on the browser this may entail only responding to a prompt, or choosing "Save As..." from the browser file menu.
• Once on the local disk, double click the zipped file to extract the Excel Workbooks. A total of 4 files will be extracted for each zipped file.
• In Microsoft Excel, open the area Model file. From this graphical user interface the wet, normal, or dry year models may be selected.
• For further information on the use of the models please refer to the tutorial included in each of the workborks.

^* Please note that these files are in read only format. Any changes to the models made by the user may change the results and must be saved with a new file name.

^** For Windows XP users - Due to additional security levels, XP users may have to manually change their security levels. If you receive a message when opening Microsoft Excel that reads as follows: "Macros in this workbook are disabled because the security level is high..." click OK and perform the following routine: Under the Tools menu, click on Macro then Security. Change the Security Level to Medium, this will enable the user to go to the Spreadsheet Model Main Menu.