Berm cranes at Miraflores Locks

Leonard Carpenter Panama Canal Collection. Photographs: Dredging, Soldiers, and Ships. [Box 1] from the Special Collections & Area Studies Department, George A. Smathers Libraries, University of Florida. Photo notation: These are most economical in handling concrete but not so elastic as the cable way method (ca. 1914)

80 C 147 U.S. Aeroplane carrier "Saratoga" and H.M.S. "Despatch" in lower chambers, Miraflores Locks - Panama Canal - 2/7/28

Leonard Carpenter Panama Canal Collection. Photographs: Views of Panama and the Canal. [Box 1] from the Special Collections & Area Studies Department, George A. Smathers Libraries, University of Florida.

U.S. Favorite, Miraflores Locks - Old Timers trip through Canal. Jan. 20, 1928

Leonard Carpenter Panama Canal Collection. Photographs: Views of Panama and the Canal. [Box 1] from the Special Collections & Area Studies Department, George A. Smathers Libraries, University of Florida.

Control of California sea lion predation of winter-run steelhead at the Hiram M. Chittenden Locks, Seattle, December 1985-April 1986 with observations on sea lion abundance and distribution in Puget Sound

A study/predation control program was conducted at the Hiram M. Chittenden Locks in Seattle, Washington from 20 December through 23 April 1986. The principal objectives were to document the rate and effects of predation on winter-run steelhead (Salmo gairdneri Richardson) by California sea lions (Zalophus californianus); to control and minimize predation in order to increase the escapement of wild winter-runs to the Lake Washington watershed; to evaluate and recommend potential long term procedures for control of steelhead predation; and to document the abundance and distribution of California sea lions in Puget Sound.

Chesapeake and Delaware Canal Affects Environmental: presented at American Society of Civil Engineers National Water Resources Engineering Meeting, Phoenix, Arizona, 14 January 1971

The Chesapeake and Delaware Canal is a man-made waterway connecting the upper Chesapeake Bay with the Delaware Bay. It started in 1829 as a private barge canal with locks, two at the Delaware end, and one at the Chesapeake end. For the most part, natural tidal and non-tidal waterways were connected by short dredged sections to form the original canal. In 1927, the C and D Canal was converted to a sea-level canal, with a controlling depth of 14 feet, and a width of 150 feet. In 1938 the canal was deepened to 27 feet, with a channel width of 250 feet. Channel side slopes were dredged at 2.5:1, thus making the total width of the waterway at least 385 feet in those segments representing new cuts or having shore spoil area dykes rising above sea level. In 1954 Congress authorized a further enlargement of the Canal to a depth of 35 feet and a channel width of 450 feet. (pdf contains 27 pages)

Summary document of the work being done in 1992-1993 regarding the migratory salmonid fisheries of the River Ribble catchment

This document lists the work on salmonid fisheries in the River Ribble catchment in the north west of England which was done in 1992-93. The document includes the following: analysis of historical catch data from the River Ribble covering 1937-1991; Ribble and Hodder stock assessment surveys 1992-93 including Swanside Beck; Ribble catch data from game angling log books 1993; results of salmon scale sampling 1993; results of microtagging programme in Hodder and Ribble 1993; Waddow Weir dish counter data 1993; Winkley Hall (Hodder), Locks Weir and Waddow Hall (Ribble) fish counter data 1993; number of fish and ova from Witcherwell Hatchery 1993.

South Lancashire Fisheries Advisory Committee 19th October, 1977

This is the report from the South Lancashire Fisheries Advisory Committee meeting, which was held on the 19th October, 1977. It covers fisheries income and expenditure, licence duties, fishing regulations, and information on the pollution of Stock Beck. It also comments on the report by the area fisheries officer on fisheries activities which includes information on fish movement and angling for salmon, sea trout, brown trout and coarse fish. Included in this report is also the numbers of fish passing through counting stations from January to August 1977 at Waddow Weir, Winckley Hall and Locks Weir, poaching, fish mortalities, stock numbers and an update on Holmwrangle hatchery. The Fisheries Advisory Committee was part of the Regional Water Authorities, in this case the North West Water Authority. This preceded the Environment Agency which came into existence in 1996.

South Lancashire Fisheries Advisory Committee 11th January, 1978

This is the report from the South Lancashire Fisheries Advisory Committee meeting, which was held on the 11th January, 1978. It covers information of fisheries income and expenditure, licence duties, regional water resources study, Worthington reservoirs regarding fishery regulations and radioactive discharge in relation to fishery interests. It also includes the report by the area fisheries officer on river conditions and fishing for salmon, sea trout, brown trout and coarse fish, numbers of migratory fish movements at Waddow Weir, Winckley Hall and Locks Weir, and Langcliffe Hatchery. Included in this report is also a brief note on fish disease in salmon in the Ribble and Hodder, and the improvement of Stock Beck after the pollution incident. The Fisheries Advisory Committee was part of the Regional Water Authorities, in this case the North West Water Authority. This preceded the Environment Agency which came into existence in 1996.

South Lancashire Fisheries Advisory Committee 5th April, 1978

This is the report from the South Lancashire Fisheries Advisory Committee meeting, which was held on the 5th April, 1978. It covers information on fisheries income and expenditure, net licence duties and the concern over the growning population of the feral mink. It also includes the report by the area fisheries officer on river conditions and fishing, and migratory fish movements at Waddow Weir, Winckley Hall and Locks Weir. Included in this report is an update on Langcliffe hatchery, the stocking of brown trout and rainbow trout by the Water Authority and Angling Associations, and fish mortality and fish disease. The Fisheries Advisory Committee was part of the Regional Water Authorities, in this case the North West Water Authority. This preceded the Environment Agency which came into existence in 1996.

South Lancashire Fisheries Advisory Committee 12th January 1977.

This is the report from the South Lancashire Fisheries Advisory Committee meeting, which was held on the 12th January 1977. The report contains sections on fish mortalities at Henthorn on the 10th July, 1976, fisheries activities, fish stocking, eel fishing on estuarial waters, and infectious Pancreatic Necrosis highlighting its prevention on imports of salmonid fish and ova. The section on fish mortalities looks at fish deaths on the River Ribble caused by a discharge from Clitheroe Sewage Works. The report on fisheries activities includes information on artificial propagation and numbers of fish passing through Waddow Weir, Winckley Hall and Locks Weir between January to November 1976. The Fisheries Advisory Committee was part of the Regional Water Authorities, in this case the North West Water Authority. This preceded the Environment Agency which came into existence in 1996.

South Lancashire Fisheries Advisory Committee 18th October, 1978

This is the report from the South Lancashire Fisheries Advisory Committee meeting, which was held on the 18th October, 1978. It covers information on fisheries income and expenditure, the study of salmon propagation in England and Wales, work on the future programme of fisheries work and keep nets. Other sections include the report on the effects of Barnoldswick STW on Stock Beck and the River Ribble, information on the Leeds/Liverpool Canal transfer of mine water from Bickershaw Colliery and the future fishing policy of Worthington Reservoir. It also covers the report by the area fisheries officer on fishing activities including river conditions and fishing for salmon, sea trout, and coarse fish, and an update on Langcliffe hatchery. The report also looks at migratory fish movements at Waddow Weir, Winckley Hall and Locks Weir, stocking numbers of brown trout, rainbow trout and coarse fish in various rivers, pollution incidents and fish mortalities. The Fisheries Advisory Committee was part of the Regional Water Authorities, in this case the North West Water Authority. This preceded the Environment Agency which came into existence in 1996.

South Lancashire Fisheries Advisory Committee 10th January, 1979

This is the report from the South Lancashire Fisheries Advisory Committee meeting, which was held on the 10th January, 1979. It covers information on the change of fishing policy at Worthington Reservoirs and a brief note about angling on Stocks Reservoir. The section on the report by the area fisheries officer on fishing activities includes river conditions and fishing for salmon and coarse fish on the Ribble and Hodder, migratory fish movements recorded at Waddow Weir, Winckley Hall and Locks Weir and an update on Langcliffe Hatchery. Also included are stocking numbers of brown trout added to the Ribble and the numbers of coarse fish added to various water courses. The Fisheries Advisory Committee was part of the Regional Water Authorities, in this case the North West Water Authority. This preceded the Environment Agency which came into existence in 1996.

South Lancashire Fisheries Advisory Committee 4th April, 1979

This is the report from the South Lancashire Fisheries Advisory Committee meeting, which was held on the 4th April, 1979. It includes information on the match fishing experiment at Mitton Fishery, giving the total numbers of each species caught. Also covered is the report by the area fisheries officer on fisheries activities which comments on river conditions and fishing, migratory fish movements for 1978 recorded at Winckley Hall, Waddow Weir and Locks Weir and an update on Langcliffe hatchery including mortalities and stocking. It also looks at the spawning of salmon and sea trout in the Ribble and Hodder for the 1978 season and it gives the data of monthly salmon catches on rod, line, nets and fixed engines for the 1978 season. The Fisheries Advisory Committee was part of the Regional Water Authorities, in this case the North West Water Authority. This preceded the Environment Agency which came into existence in 1996.

South Lancashire Fisheries Advisory Committee 19th June, 1980

This is the report from the South Lancashire Fisheries Advisory Committee meeting, which was held on the 19th June, 1980. It includes information on the report by the area fisheries officer on fisheries activities which comments on river conditions and fishing, migratory fish movements for 1980 recorded at Winckley Hall on the River Hodder, and Waddow Weir and Locks Weir on the River Ribble. Also covered is an update on Langcliffe Hatchery, pollution incidents and fish mortalities. It also gives a list of stocking numbers of brown trout, rainbow trout and coarse fish which includes the size of the fish, the source from which they came from, the date and the receiving water. The Fisheries Advisory Committee was part of the Regional Water Authorities, in this case the North West Water Authority. This preceded the Environment Agency which came into existence in 1996.

South Lancashire Fisheries Advisory Committee 9th January, 1980.

This is the report from the South Lancashire Fisheries Advisory Committee meeting, which was held on the 9th January 1980. The report contains sections on the minutes of the Special Meeting held on 13rd December 1979, net and fixed engine licence duties, EEC Directive on the quality of freshwaters, the market survey at Worthington Lakes, disposal of redundant reservoirs and a fisheries activities report. The section on the fisheries activities reported by the area fisheries officer looks at river conditions, fishing and migratory fish movement on Rivers Ribble and Hodder (Winckley, Waddow and Locks weir), an update on Langcliffe and Pilot Hatchery, and stocking carried out by Angling Associations and the Water Authority. The Fisheries Advisory Committee was part of the Regional Water Authorities, in this case the North West Water Authority. This preceded the Environment Agency which came into existence in 1996.