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Instream Flow Studies Pennsylvania and Maryland

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Instream Flow Studies Pennsylvania and Maryland INSTREAM FLOW STUDIES PENNSYLVANIA AND MARYLAND Publication 191 May 1998 Thomas L. Denslinger Donald R. Jackson Civil Engineer Manager–Hydraulic Staff Hydrologist Pennsylvania Dept. of Environmental Protection Susquehanna River Basin Commission William A. Gast George J. Lazorchick Chief, Div. Of Water Planning and Allocation Hydraulic Engineer Pennsylvania Dept. of Environmental Protection Susquehanna River Basin Commission John J. Hauenstein John E. McSparran Engineering Technician Chief, Water Management Susquehanna River Basin Commission Susquehanna River Basin Commission David W. Heicher Travis W. Stoe Chief, Water Quality & Monitoring Program Biologist Susquehanna River Basin Commission Susquehanna River Basin Commission Jim Henriksen Leroy M. Young Ecologist, Biological Resources Division Fisheries Biologist U.S. Geological Survey Pennsylvania Fish and Boat Commission Prepared in cooperation with the Pennsylvania Department of Environmental Protection under Contract ME94002. SUSQUEHANNA RIVER BASIN COMMISSION Paul O. Swartz, Executive Director John Hicks, N.Y. Commissioner Scott Foti, N.Y. Alternate James M. Seif, Pa. Commissioner Dr. Hugh V. Archer, Pa. Alternate Jane Nishida, Md. Commissioner J.L. Hearn, Md. Alternate Vacant, U.S. Commissioner Vacant, U.S. Alternate The Susquehanna River Basin Commission was created as an independent agency by a federal-interstate compact* among the states of Maryland, New York, Commonwealth of Pennsylvania, and the federal government. In creating the Commission, the Congress and state legislatures formally recognized the water resources of the Susquehanna River Basin as a regional asset vested with local, state, and national interests for which all the parties share responsibility. As the single federal-interstate water resources agency with basinwide authority, the Commission's goal is to effect coordinated planning, conservation, management, utilization, development and control of basin water resources among the government and private sectors. *Statutory Citations: Federal - Pub. L. 91-575, 84 Stat. 1509 (December 1970); Maryland - Natural Resources Sec. 8-301 (Michie 1974); New York - ECL Sec. 21-1301 (McKinney 1973); and Pennsylvania - 32 P.S. 820.1 (Supp. 1976). For additional copies, contact the Susquehanna River Basin Commission, 1721 N. Front Street, Harrisburg, PA 17102-2391, (717) 238-0425 or FAX (717) 238-2436. ii CONTENTS ACKNOWLEGEMENTS ................................ ................................ ................................ ........... xiii EXECUTIVE SUMMARY ................................ ................................ ................................ ......... 1 1.0 NEED FOR STUDY ................................ ................................ ................................ ...... 3 2.0 STUDY CONCEPTS AND PROCEDURES ................................ ................................ .. 5 2.1 Overall Study Plan for Determining Instream FlowNeeds ................................ ... 5 2.1.1 Methods for evaluating instream flowneeds ................................ ........ 6 2.1.1.1 Description of IFIM methodology ................................ .... 6 2.1.1.2 Description of wetted perimetermethod ............................ 8 2.1.1.3 Comparison of IFIM and wetted perimetermethods .......... 8 2.1.2 Evaluation species ................................ ................................ .............. 8 2.1.3 Habitat suitability criteria selection, testing, anddevelopment .............. 9 2.1.4 Classification of trout streams ................................ ............................ 9 2.1.4.1 Stream classification purpose ................................ ........... 9 2.1.4.2 Stream classification scheme ................................ ............ 9 2.1.4.3 Development and selection of studyregions ...................... 10 2.1.5 Selection of study streams ................................ ................................ .. 11 2.1.6 Selection of study sites ................................ ................................ ....... 12 2.1.7 Development of habitat versus flow relationships ................................ 12 2.1.8 Impact assessment ................................ ................................ .............. 12 2.1.9 Wetted perimeter method ................................ ................................ .... 13 2.2 Study Organization ................................ ................................ ............................ 13 3.0 SUITABILITY CRITERIA SELECTION, TESTING AND DEVELOPMENT .............. 15 3.1 Habitat Suitability Criteria and Species Periodicity ................................ ............ 15 3.1.1 Depth and velocity criteria ................................ ................................ .. 15 3.1.2 Substrate/cover criteria ................................ ................................ ....... 17 3.1.3 Periodicity chart ................................ ................................ ................. 18 3.2 Selection of Study Streams for Transferability Testing ................................ ........ 18 3.3 Description of Study Streams ................................ ................................ ............. 19 3.3.1 Cherry Run ................................ ................................ ........................ 19 3.3.2 Little Fishing Creek ................................ ................................ ............ 19 3.3.3 Young Womans Creek ................................ ................................ ........ 19 3.3.4 Whitehead Run ................................ ................................ ................... 21 iii 3.4 Field Data Collection ................................ ................................ ......................... 21 3.4.1 Procedures ................................ ................................ ......................... 21 3.4.2 General observations ................................ ................................ .......... 23 3.5 Transferability Study Data Analysis Procedures ................................ ................. 25 3.6 Transferability Study Data Analysis Results ................................ ....................... 26 3.7 Criteria Development ................................ ................................ ......................... 27 3.7.1 Procedures ................................ ................................ ......................... 27 3.7.2 Depth and velocity criteria ................................ ................................ .. 28 3.7.3 Substrate and cover ................................ ................................ ............ 37 3.7.4 Results ................................ ................................ ............................... 40 3.8 Conclusions and Recommendations ................................ ................................ .... 40 4.0 SELECTION OF STUDY STREAMS ................................ ................................ ........... 52 4.1 Overview ................................ ................................ ................................ ........... 52 4.2 Development of the Stream Database for Pennsylvania Streams........................... 52 4.3 Slope-Length Relationship and Segment LengthCriteria ................................ ..... 53 4.4 Study Stream Selection Procedure andResults ................................ .................... 54 5.0 DEVELOPMENT OF HABITAT VERSUS FLOW RELATIONSHIPS ........................ 69 5.1 Overview ................................ ................................ ................................ ........... 69 5.2 Study Site Selection ................................ ................................ ........................... 69 5.3 Field Data Collection Procedures ................................ ................................ ........ 74 5.3.1 Mesohabitat percentages ................................ ................................ ........ 74 5.3.2 Description of data sets ................................ ................................ .......... 74 5.3.3 Model calibration and flow range criteria ................................ ............... 79 5.3.4 Field measurement procedures ................................ ............................... 81 5.3.5 Problems encountered ................................ ................................ ............ 81 5.3.6 Data processing procedures ................................ ................................ ... 82 5.4 Spawning Location Characterization Procedure andResults ............................... 82 5.4.1 Methods for studying spawning location ................................ ................. 82 5.4.2 Results of spawning location study ................................ ........................ 83 5.4.3 Conclusion ................................ ................................ ............................ 96 5.5 Hydrologic Analyses ................................ ................................ .......................... 96 5.5.1 Hydrologic analysis concepts ................................ ................................ 96 5.5.2 Stream gage selection ................................ ................................ ........... 97 5.5.3 Hydrology for study sites ................................ ................................ ....... 97 5.5.4 Criteria for dispatching field crews ................................ ........................ 102 iv 5.6 Hydraulic Modeling ................................ ................................ ........................... 102 5.6.1
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