Wyoming State Water Plan, Wyoming Water Development Office
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Green River Basin Plan

2001 Plan


As authorized by the Wyoming Water Development Commission in its contract scope of work, this planning document presents current and proposed (estimated) future uses of water in Wyoming's Green River Basin. Uses to be inventoried include agricultural, municipal, industrial, environmental, and recreation. Both surface and ground water uses, as well as overall water quality are described. Given current uses, the availability of surface and ground water to meet future requirements is estimated. To lay the groundwork for future water development, a review of the current institutional and legal framework facing such projects is presented. Finally, thoughts are given to guide implementation of the water planning process.

The structure of this final report is to present findings in enough detail to explain the overall plan without deluging the reader in technical minutiae. Technical memoranda have been prepared which delve into the many individual topics in detail, and it is to these documents the reader should turn for answers to questions about details, methods, and for selected references. No separate list of citations is provided herein other than for the Technical Memoranda (which, individually, contain complete bibliographies).

Upper Colorado Basin Sub Region Map

Low Res PDF(3,245kb) or High Res PDF(22,411kb) Access the 2001 Green River Basin Plan Final Report

HTML; Low Res PDF(176kb) or High Res PDF(2,779kb) The Green River Basin Water Planning Process document is one of two basin water plans compiled under initial efforts of the Wyoming Water Development Commission.

HTML; Low Res PDF(1,082kb) or High Res PDF(7,598kb) This chapter describes and quantifies the various current uses made of water in the Green River Basin.

HTML; Low Res PDF(883kb) or High Res PDF(9,812kb) This chapter presents estimates of the availability of both surface water and ground water for future uses.

HTML; Low Res PDF(161kb) or High Res PDF(324kb) For assessing the need for water into the future, this plan has developed estimates of water demand for each major use category out to year 2030.

HTML; Low Res PDF(837kb) or High Res PDF(1,800kb) A review of the completed planning studies, future basin demands, compact considerationgs and water supply opportunities for the Green River Basin

HTML; Low Res PDF(27kb) For purposes of this report, plan implementation is the series of tasks to be sequentially and periodically assessed and undertaken so that the planning information is current and accurate, funding mechanisms are protected or enhanced, and law and policy implications on plan implementation are both comprehended and closely monitored.

HTML; PDF (118kb) Access the 2010 Green River Basin Plan Executive Summary here

Green River Basin Water Plan
Spreadsheet Models

Task 3B encompassed creating twelve spreadsheet workbooks, one for each of three hydrologic conditions and four distinct sub-basins:
  • Upper Green River Basin from the Green River headwaters to Flaming Gorge
  • Blacks Fork River Basin from the Blacks Fork and Smiths Fork headwaters to Flaming Gorge
  • Henrys Fork River Basin from the Henrys Fork headwaters to Flaming Gorge, and
  • Little Snake River Basin from the Little Snake headwaters to the USGS stream gaging station Little Snake River near Lily, CO.

For further information including both a user's guide and engineering documentation of the models please refer to the Task 3B Surface Water Data Synthesis and Spreadsheet Model Development Technical Memorandum.

Steps for Downloading the Models

The three workbooks (wet, dry and normal years) for each sub-basin are yoked together with a simple menu-driven graphical user interface (GUI), effectively creating four sub-basin 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 Sub-Basin 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.
Sub-Basin Spreadsheet Models

Upper Green River Sub-Basin Model   2,736 kb compressed
10,492 kb uncompressed
Blacks Fork River Sub-Basin Model   1,433 kb compressed
  5,191 kb uncompressed
Henrys Fork River Sub-Basin Model       827 kb compressed
  2,823 kb uncompressed
Little Snake River Sub-Basin Model   1,465 kb compressed
  5,381 kb uncompressed

* 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.

The 2001 Green River Basin Water Plan Technical Memoranda are listed in the table below. The memoranda may be viewed in either html or PDF. The PDF version requires Adobe Acrobat® Reader. If you do not already have this program on your computer, please visit Adobe's Website to download a free copy. In addition, the Technical Memoranda contain download options for both high resolution and low resolution PDF. The high resolution documents provide high quality images and photos and are recommended for printing purposes, while the low resolution documents have a smaller file size and are recommended for viewing only. Please note the size of the file when deciding which to view or print.

(low resolution)
(high resolution)
Technical Memoranda
Chapter I
80 kb 97 kb ---   Wyoming Water Law Summary
148 kb 125 kb ---   Summary of Interstate Compacts
Chapter II
>99 kb 107 kb 772 kb   Basin Water Use Profile - Agriculture
175 kb 283 kb 750 kb   Cropping Patterns in the Basin
362 kb 1,537 kb 6,226 kb   Irrigated Lands and Permit GIS Data
73 kb 78 kb ---   Basin Water Use Profile - Municipal
15 kb 20 kb ---   Basin Water Use Profile - Domestic
51 kb 56 kb ---   Basin Water Use Profile - Industrial
229 kb 376 kb 1,316 kb   Recreational Uses
249 kb 693 kb 2,425 kb   Environmental Uses
296 kb 707 kb 3,874 kb   Major Reservoir Information
63 kb 120 kb 445 kb   Instream Flows in Wyoming
323 kb 1,835 kb 4,217 kb   Surface Water Quality
85 kb 179 kb 622 kb   Colorado River Basin Salinity Control Program
Chapter III
181 kb 221 kb 690 kb   Surface Water Data Collection and Study Period Selection
360 kb 578 kb 1,476 kb   Surface Water Data Synthesis and Spreadsheet Model Development
184 kb 219 kb ---   Available Surface Water Determination
701 kb 1,290 kb 5,674 kb   Available Ground Water Determination
Chapter IV
246 kb 602 kb 1,962 kb   Irrigation Water Needs and Demand Projections
95 kb 41 kb ---   Population Projections
111 kb 56 kb ---   Industrial Water Needs Projections
110 kb 63 kb ---   Future Recreational and Environmental Water Requirements
Chapter V
188 kb 204 kb 2,091 kb   Criteria for Screening Future Water Use Opportunities
123 kb 132 kb 836 kb   Water Conservation
46 kb 49 kb ---   Institutional Constraints
26 kb 29 kb ---   Wyoming Depletions in the Little Snake River Basin
56 kb 70 kb ---   Irrigation Diversion Operation and Description
136 kb 114 kb 1,479 kb   Water Division 1, District 8
75 kb 92 kb ---   Water Division 4, District 3
57 kb 67 kb ---   Water Division 4, District 5
106 kb 79 kb 1,114 kb   Water Division 4, District 6
1,090 kb 865 kb 1,139 kb   Water Division 4, District 7
51 kb 69 kb ---   Water Division 4, District 9
510 kb 529 kb 3,766 kb   Water Division 4, District 10
278 kb 297 kb ---   Water Division 4, District 11
27 kb 36 kb ---   Water Division 4, District 14
284 kb 268 kb 1,206 kb   Water Division 4, District 15