The Fishery of Spring Creek a Watershed Under Siege
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The Fishery of Spring Creek A Watershed Under Siege By Robert F. Carline Rebecca L. Dunlap Jason E. Detar Bruce A. Hollender Pennsylvania Fish and Boat Commission Technical Report Number 1 photo-PFBC Archives Pennsylvania Fish and Boat Commission P.O. Box 67000. Harrisburg, PA 17106-7000 www.fishandboat.com © 2011 Pennsylvania Fish and Boat Commission All rights reserved. No part of this book may be reproduced or transmitted in any form or by means, electronic or mechanical, including photocopying, recording, or by any information storage or retrieval system without written permission from the Pennsylvania Fish and Boat Commission (PFBC), or its agent, with the exception for inclusion of brief quotations in a book review or scholarly citation. Printed in the United States of America Carline, R. F., R. L. Dunlap, J. E. Detar, and B. A. Hollender. 2011. The fishery of Spring Creek – a watershed under siege. Pennsylvania Fish and Boat Commission, Technical Report Number 1, Harrisburg, PA. Mailing address for inquiries about this publication: Pennsylvania Fish and Boat Commission Bureau of Policy, Planning and Communications Division of Communications P.O. Box 67000 Harrisburg, PA 17106-7000 This publication is available online at www.fishandboat.com The printed version of this publication is provided on recycled paper. The Fishery of Spring Creek A Watershed Under Siege Table of Contents 24 Results • Fisherman’s Paradise 1980-2000 2 Foreword • Main Stem • Density and Biomass 2 About the Authors • Size Structure • Length at Age 3 Abstract • Spatiotemporal Variations in Growth • Reproduction 5 Introduction • Recreational Fishery • Tributaries 7 Study Area • Logan Branch • Gap Run 9 Human Populations Trends • Buffalo Run and Land Use • Slab Cabin Run • Galbraith Gap Run 10 Historical and Contemporary • Upper Spring Creek Water Quality • Cedar Run • Wastewater Treatment Facilities • Water Quality in the first half of the 33 Threats from Invasive Species 20th Century • Water Quality since 1950 35 Response to Landscape Alterations • Kepone and Mirex Contamination • Riparian Restoration • Streamflow and Water Quality Trends • I-99 Construction at the Axemann Gage 37 Using a Biotic Index to 15 Historical Notes on the Trout Fishery Assess Stream Condition 16 Trout Production 39 Threats from Increasing Urbanization • Early Years • Fish Culture Facilities in the Spring Creek 42 Managing Treated Wastewater Watershed and Storm Water • Pleasant Gap State Fish Hatchery • PSU Land Treatment Area • Bellefonte State Fish Hatchery • Beneficial Reuse • Benner Spring State Fish Hatchery • Storm Water Management • Riparian Buffer Restoration 19 Fisherman’s Paradise 43 Summary 20 Fish Community Composition and Biomass 45 Acknowledgements 22 Contemporary Assessment Methods • Population Assessments 45 Literature Cited • Growth • Length at Age 53 Figures • Seasonal Variation • Redd Surveys 70 Tables • Angler Surveys 80 Appendices Foreword A fishery consists of three elements: the animals that are being pursued, the habitat in which the animals live, and the people who are pursuing the animals for either sport or commercial purposes. Hence, in attempting to describe the historical and contemporary fishery of Spring Creek, we put considerable emphasis on habitat features, particularly water quality, while describing the trout populations and the anglers who were and are engaged in this fishery. We have written this bulletin with several audiences in mind: fisheries managers and researchers, regulatory agencies, municipal planners, elected officials, and anglers. We use metric units because much of our data were collected using that system, and it is preferred for scientific publications. We have included equivalent English units after the first use of a metric unit, except for flow, where we always give the English equivalents. The challenge of addressing audiences with such a broad range of interests is finding the right balance between technical detail and ease of comprehension. We leave it to the readers to tell us if we came close to that balance. About the Authors Dr. Robert Carline devoted Rebecca Dunlap serves as Manager for the northcentral his entire professional career Manager for National Trout region. During his time with the to fisheries research. He began Unlimited’s Eastern Abandoned Commission, Jason has been working with the Wisconsin Mine Program which focuses involved with several fisheries Department of Natural on the conservation, protection, management and habitat Resources in 1967, then took a and restoration of the coldwater enhancement and restoration position with the U.S. Fish and fisheries and watersheds that projects in the Spring Creek Wildlife Service in 1976, and have been impacted by historic watershed. Jason earned a came to Pennsylvania in 1984, coal mining throughout the B.S. degree in Wildlife and where he was Leader of the Appalachian region. Prior to Fisheries Science from PSU Pennsylvania Cooperative Fish joining Trout Unlimited, she and a M.S. degree in Biology and Wildlife Research Unit, served as the Water Resources from Tennessee Technological U.S. Geological Survey, until Coordinator for the ClearWater University. his retirement in April 2007. He Conservancy and managed the Bruce Hollender began as a served as Adjunct Professor of Spring Creek Watershed’s Water biologist with the Pennsylvania Fisheries in the School of Forest Resources Monitoring Program. Fish and Boat Commission in Resources at The Pennsylvania Becky has a B.S. degree 1971 and went on to become State University (PSU), where in Biology from Mansfield the Area Fisheries Manager the Unit is housed. He began University and a M.S. degree in for the northcentral region; his first research project on Biology from the University of he retired in 2007. During Spring Creek in 1985 and has North Texas. his tenure he surveyed and been actively involved in a Jason Detar joined the developed management plans wide variety of projects in the Pennsylvania Fish and Boat for most of the streams, rivers, watershed since then. Commission in 2004 and is and lakes in the region. He currently the Area Fisheries earned B.S. and M.S. degrees in Natural Resources, majoring in Fisheries, from the University of Wisconsin-Stevens Point. 2 The Fishery of Spring Creek: A Watershed Under Siege Abstract The Spring Creek watershed the watershed. These springs years, wastewater treatment (378 km2; 146 mi2) has provide adequate year-round plants have been consolidated undergone substantial changes stream flow, and they moderate into two facilities, and treated in land use since settlement water temperatures in summer wastewater from PSU is being in the late 1700s. Even though and winter. spray irrigated onto agricultural urbanization and population and forest lands. It is likely that While these springs have growth are increasing at a rapid water quality in Spring Creek is long benefited water quality, pace, Spring Creek continues better now than it has been raw sewage from population to support wild trout and a since 1900. centers in the early 1900s heavily-used sport fishery. The probably polluted certain stream Deteriorating water quality purpose of this bulletin is to reaches. Between 1913 and and stocking of brown trout in trace the history of the Spring 1968, five wastewater treatment the 1890s probably contributed Creek fishery, attempt to relate plants were constructed in to the decline of native brook changes in the fishery to human the watershed, but discharges trout in the watershed. Some activities, and assess potential from several of these plants wild brook trout persisted in the threats. The persistence of often degraded water quality. main stem of Spring Creek until wild trout in Spring Creek is In addition, Spring Creek was the 1950s, but by then brown linked to the karst geology, subjected to numerous toxic trout had taken over the main which is characterized by many spills, some of which killed stem and much of the tributaries. limestone springs throughout thousands of fish. In recent Contamination of Spring Creek Spring Creek in the scenic canyon section, upstream of Fisherman’s Paradise. photo-PFBC Archives The Fishery of Spring Creek: A Watershed Under Siege 3 with kepone and mirex led to the were initially allowed to harvest Conversion of forests and cessation of stocking catchable two trout per day. The reach was agricultural land to urban areas size trout and imposition of no- heavily stocked with large trout, and to transportation networks harvest regulations in 1982 to and fishing pressure was intense represents the biggest threat prevent consumption of tainted over the two-month season. to the watershed and the trout fish. These management changes Angler-use peaked in 1952 with fishery. We monitored two appear to have benefited brown more than 44,000 angler trips. sites on Spring Creek during trout; between 1980 and 1988, Poor water quality and high cost construction of Interstate density of age-1 and older brown of the program led to its closure Highway 99 (I-99) and found trout increased by 180% and in 1961. Thereafter, Fisherman’s that sediment loading to in 1988 density ranged from Paradise was managed as a the stream increased during 678 to 1,327 trout/ha. Density ‘fish-for-fun’ program, tackle construction, but there was no continued to increase until 2000 restrictions remained in place, evidence that trout spawning and declined somewhat in 2006, and stocking of trout was habitat or macroinvertebrate when density ranged from 368 to discontinued after the 1981 communities were affected. 1,563 trout/ha. Growth of brown season. Fishing pressure remains When macroinvertebrate trout was typical of limestone high. From April to June 2006, communities were used to streams statewide; age-4 brown estimated pressure was 5,063 assess stream health, it seemed trout averaged 318 mm (12.5 in) angler-h/km, which was 34 that urbanization in the upper total length. Stream flow and times higher than the estimated one-half of the watershed was temperature, rather than trout average fishing pressure on wild impairing water quality.