Author: John PitloPublisher:
ISBN:
Category : Dams
Languages : en
Pages : 32
Book Description
Fish Populations Associated with Wing and Closing Dams on the Upper Mississippi River
Author: John PitloUpper Mississippi River Wing Dam Notching
Author: Rodney B. PiercePublisher:
ISBN:
Category : Dams
Languages : en
Pages : 258
Book Description
Six wing dams and an adjacent side channel in Pool 13 of the Upper Mississippi River were studied in the initial phase (pre-notching) of a project to determine the effects of wing dam notching on fish and aquatic community characteristics. Fifty two species of fish were caught in the study area with hoop nets, electrofishing gear, and a small-mesh seine. Thirty eight fish species were caught on or near wing dams. Electrofishing provided the widest variety of fish species and hoop netting provided the least. Electrofishing and hoop net catches were influenced by river stage or discharge. Species composition of the catches changed more dramatically from sampling month to month than between kinds of habitat. Fish were caught in greatest numbers and diversity throughout the study area in August. Discharge varied from month to month and year to year. Water temperature and dissolved oxygen concentration were nearly uniform with depth and among sampling sites each month. Height of wing dams and their position with respect to an upstream bend in the river and to other wing dams influenced current velocity in the study area. Current sweeping over submerged wing dams and over emergent wing dams during high river stages helps prevent sediment accretion between them.
A History of Fish and Fishing in the Upper Mississippi River
Author: Harriet Bell CarlanderPublisher:
ISBN:
Category : Fisheries
Languages : en
Pages : 124
Book Description
Analysis of Existing Information on Adult Fish Movements Through Dams on the Upper Mississippi River
Author: Publisher:
ISBN:
Category : Fishes
Languages : en
Pages : 434
Book Description
During the mid-1970's, an assessment of the potential for expansion of the nation's hydroelectric generating capabilities was initiated by the passage of the Water Resources Development Act (PL 94-587). Economic feasibility studies for small-scale hydropower development were performed for sites on the Upper Mississippi River (UMR). The U.S. Fish and Wildlife Service has been asked to provide input into the final feasibility report and draft Environmental Impact Statements for hydropower development at Locks and Dams 5 and 8. This report as the following objective: to compile, review, and analyze existing information on movements of adult fish through dams on the UMR from St. Anthony Falls to Lock and Dam 14. Secondary objectives include (1) identification of information gaps about adult fish movements and UMR fisheries in general that would prevent an accurate assessment of the impacts of small-scale hydropower development on UMR fisheries; and (2) identification of impact assessment techniques, approaches, and means of obtaining the necessary data for an assessment of the impacts of small-scale hydropower development on ichthyoplankton and UMR fisheries.
Characteristics of Fish Populations in Upper Mississippi River Backwater Areas
Author: Lyle M. ChristensonPublisher:
ISBN:
Category : Freshwater fishes
Languages : en
Pages : 64
Book Description
Characteristics of Fish Populations in Upper Mississippi River Backwater Areas
Author: Lyle M. ChristensonPublisher:
ISBN:
Category : Freshwater fishes
Languages : en
Pages : 53
Book Description
Characteristics of Fish Populations in Upper Mississippi River Backwater Areas (Classic Reprint)
Author: Lyle M. ChristensonPublisher: Forgotten Books
ISBN: 9780282113445
Category : Business & Economics
Languages : en
Pages : 66
Book Description
Excerpt from Characteristics of Fish Populations in Upper Mississippi River Backwater Areas River were determined during the period 1947 - 52 under the auspices of the Upper Mississippi River Conservation Committee. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Characteristics of Fish Populations in Upper Mississippi River Backwaters
Author: Lyle M. ChristensonPublisher:
ISBN:
Category : Freshwater fishes
Languages : en
Pages : 53
Book Description
Fish Passage Through Dams in Large Temperate Floodplain Rivers
Author: A Compendium of Fishery Information on the Upper Mississippi River
Author: Upper Mississippi River Conservation CommitteePublisher:
ISBN:
Category : Fisheries
Languages : en
Pages : 422
Book Description