Reallocation Report and US Army Corps Environmental Assessment of Engineers Kansas City District Leaders in Customer Care • I ' ' ' • Draft April 1988 DEPARTMENT OF THE ARMY KANSAS CITY DISTRICT. CORPS OF ENGINEERS 700 FEDERAL BUILDING KANSAS CITY. MISSOURI 64106-2896 REPLY TO ATTENTION OP: REALLOCATION REPORT AND ENVIRONMENTAL ASSESSMENT REPORT ON REALLOCATION OF STORAGE AT MELVERN, POMONA, AND TUTTLE CREEK LAKES KANSAS TABLE OF CONTENTS Title Page No. INTRODUCTION 1 Authority 1 Purpose and Scope 2 Memorandum of Understanding 3 EXISTING CONDITIONS 5 Authorized Projects 5 Operation of Projects 11 M e l v e m Lake 11 Pomona Lake 14 Tuttle Creek Lake 18 REALLOCATION 22 Need for Reallocation 22 Plan Formulation 22 Description of Reallocation 23 Economic Analysis 26 Environmental Analysis 29 IMPLEMENTATION 30 Institutional Reguirements 30 Federal and Non-Federal Responsibilities 30 Views of Sponsor 30 SUMMARY OF COORDINATION, PUBLIC VIEWS, AND COMMENTS 31 RECOMMENDATIONS 35 FINDING OF NO SIGNIFICANT IMPACT (Draft) 36 ENVIRONMENTAL ASSESSMENT 38 BIBLIOGRAPHY APPENDIX l* TABLE OF CONTENTS (cont.) TABLES Title Page No. Corps of Engineers Lake Project Data 6 Melvern Lake, Pertinent Data 9 Pomona Lake, Pertinent Data 10 Existing Water Supply Allocation at Pomona Lake 10 Tuttle Creek Lake, Pertinent Data 11 Melvern Recreation Facilities 12 Melvern Lake Visitation Data 14 Melvern Lake, Distribution of Recreation Activities 14 Pomona Recreation Facilities 15 Pomona Lake Visitation Data 17 Pomona Lake, Distribution of Recreation Activities 17 Tuttle Creek Lake Releases 20 Tuttle Creek Recreation Facilities 20 Tuttle Creek Lake Visitation Data 21 Tuttle Creek Lake Distribution of Recreation Activities 21 Recommended Reallocation Storage 25 Factors and Assumptions which Affect Yield Program Results 27 FIGURES Title Page No, Melvern Lake, Actual Pool Elevations 13 Pomona Lake, Actual Pool Elevations 16 Tuttle Creek Lake, Actual Pool Elevations 19 PLATES Title Water Supply Study Area Melvern Lake Project Map Pomona Lake Project Map Tuttle Creek Lake Project Map ii I NTRODUCT I ON This report documents the need for and desirability of reallocation of storage to water supply in Melvem, Pomona, and Tuttle Creek Lakes in Kansas. The report is part of the Kansas and Osage Rivers, Kansas study. Author i ty The water supply portion of the Kansas and Osage Rivers, Kansas study was conducted in response to three Congressional resolutions. The three resolutions read as follows: RESOLVED BY THE COMMITTEE ON PUBLIC WORKS OF THE UNITED STATES SENATE, that the Board of Engineers for Rivers and Harbors, created under the provisions of Section 3 of the Rivers and Harbors Act, approved 13 June 1902, is hereby requested to review the report of the Chief of Engineers on the Osage River and Tributaries, Missouri and Kansas, published as House Document Number 549, 81st Congress, 2nd Session, and other pertinent reports, with a view to determining whether any modifications of the recommendations contained therein pertaining to the basin area in Kansas are advisable at the present time including consideration of improvements for supply, conveyance, and distribution of water to areas of need. (Adopted February 2, 1977) RESOLVED BY THE COMMITTEE ON PUBLIC WORKS OF THE UNITED STATES SENATE, that the Board of Engineers for Rivers and Harbors, created under the provision of Section 3 of the Rivers and Harbors Act, approved 13 June 1902, is hereby requested to review the report of the Chief of Engineers on the Kansas River and Tributaries, Kansas, Nebraska, and Colorado, published as Senate Document Number 122, 87th Congress, 2nd Session and other pertinent reports with a view to expanding current studies of channel improvements, bank and channel stabilization, and related improvements on the Kansas River and Tributaries in Kansas requested by the Committee on Public Works of the United States Senate in a resolution adopted on October 17, 1973, to include determining whether any additional modifications of the recommendation in the reports under review are advisable at the present time including consideration of improvements within Kansas for supply, conveyance, and distribution of water to areas of need and for the control of mineral pollutants in streams from natural sources. (Adopted February 2, 1977) 1 Resolved by the Committee on Public Works and Transportation of the House of Representatives, United States, that the Board of Engineers for Rivers and Harbors is hereby requested to review the report of the Chief of Engineers on the Kansas River and Tributaries, Kansas, Nebraska, and Colorado, published as Senate Document Number 122, 87th Congress, 2nd Session, and other pertinent reports with a view to expanding current studies of channel improvements, bank and channel stabilization, and related improvements on the Kansas River and Tributaries in Kansas requested by the Committee on Public Works of the United States Senate in a resolution adopted on October 17, 1973, to Include determining whether any additional modifications of the recommendations in the reports under review are advisable at the present time including consideration of improvements within Kansas for supply, conveyance, and distribution of water to areas of need and for the control of mineral pollutants in streams from natural sources. The Board of Engineers for Rivers and Harbors is also requested to review the report on the Osage River and Tributaries, Missouri and Kansas, published as House Document Number 549, 81st Congress, 2nd Session, and other pertinent reports, with a view to determining whether any modifications of the recommendations contained therein pertaining to the basin area in Kansas are advisable at the present time including consideration of improvements for supply, conveyance, and distribution of water to areas of need. (Adopted May 10, 1977) Purpose and Scope Federal interest in the provision of municipal and industrial water supply is provided by the Water Supply Act of 1958 (Title III of Public Law 85-500), as amended, and other statutes. The objective of this reallocation study is to provide for water supply storage in existing Federal lakes. Such reallocation should contribute to national economic development, and should be consistent with national environmental goals. This study considers reallocation of storage under criteria provided by Engineering Regulation (ER) 1105-2-20 and related guidance. The guidance stipulates that Congressional approval would normally be needed for reallocation that would significantly affect other authorized purposes or that would involve major structural or operational changes. However, 15 percent of original total storage, or 50,000 acre-feet, whichever is less, may be reallocated for water supply at the discretion of the Commander, USACE. The Kansas and Osage Rivers, Kansas study is reported in several volumes. This reallocation volume documents all aspects of the study related to reallocation of storage to water supply, along with an environmental assessment. Other aspects of water supply studies, including the formulation of plans, are documented in the main report, Kansas and Osage Rivers, Kansas, and in Appendix D to that report. The main report and appendices are being prepared concurrently with the reallocation report. A listing of all volumes is as follows: 2 Feasibility Report, Kansas and Osage Rivers, Kansas with Appendix A, Public Views and Comments Appendix B, Bank Stabilization Appendix C, Mineral Intrusion Control Appendix D, Water Supply Appendix E, Modification to Soldier Creek Diversion Unit Reallocation of Storage at Melvern, Pomona, and Tuttle Creek Lakes, Kansas The report is fully responsive to all study resolutions, with the following exceptions. The Melvern Lake reallocation recommended herein is limited to 50,000 acre-feet, which is less than the amount which could be considered. No reallocation is recommended for Kanopolis or Wilson Lakes because they were not included in the Memorandum of Understanding described in the following section. Memorandum of Understanding The reallocation studies reported herein are called for under the terms of a memorandum of understanding (MOU) between the State of Kansas and the U.S. Department of the Army. The MOU, dated December 11, 1985, is printed as an appendix to this report. The MOU included certain procedures and conditions to be followed in order for reallocation of storage to come about. The status of those procedures and conditions is summarized as follows: Kansas Water Office (KWO) Procedures 1. Propose to the State Legislature a water assurance program. (Signed into law April 25, 1986.) 2. Place $4,000,000 into escrow toward water supply storage purchased under the MOU. (Established June 30, 1986.) 3. Pay the cost of each increment of water supply storage. 4. Obtain state legislation, if necessary, to protect water quality inflows and releases. (Signed into law April 25, 1986.) 5. Work with Corps toward timely completion of reallocation studies. 6. Cost-share reallocation study costs necessitated by the MOU. (Not applicable to Kansas and Osage Rivers.) Department of the Army Procedures 1. Conduct reallocation studies on Tuttle Creek, Pomona, and Melvern Lakes in the Kansas City District (KCD), and on six Tulsa District Lakes. (KCD projects accomplished with this report.) 3 2. Allow the State of Kansas a right of first refusal for reallocated storage for 10 years. 3. Calculate purchase price for storage based on 10-year interest free period from project completion, with