Dudley W. Reiser

Kleinschmidt Associates

Given the extent of surface disturbances they can create, mining projects represent one of the most visually noticeable resource extraction operations in the world. Aerial photographs, Google earth Ó and even satellite images are able to reveal large expanses of heavily disturbed areas, often including large open pits that represent the centers of...

The Upper Klamath Basin supports a variety of fishes including native redband trout (Oncorhynchus mykiss newberrii), and three fish species (shortnose sucker (Chasmistes brevirostris), Lost River sucker (Deltistes luxatus) and bull trout (Salvelinus confluentus)) listed under the Endangered Species Act. The basin also historically supported Chinook...

A regulated stream is one where the natural flow regime has been altered, generally via construction of a dam for flood control, water supply, or hydroelectric generation. The effects of dams on downstream ecosystems can vary widely, depending on geography and climate. In this article, we focus on a specific class of effects most often associated w...

The conclusions of numerous stream restoration assessments all around the world are extremely clear and convergent: there has been insufficient appropriate monitoring to improve general knowledge and expertise. In the specialized field of instream flow alterations, we consider that there are several opportunities comparable to full-size experiments...

Variations in streamflow at falls and cascades can create transitory barriers to upstream passage of adult anadromous salmonids. In this study, we evaluated the ability of six anadromous salmonids (coho salmon Oncorhynchus kisutch, pink salmon O. gorbuscha, chum salmon O. keta, sockeye salmon O. nerka, Chinook salmon O. tshawytscha, and steelhead O...

We conducted a two-year field study (2000-2001) in the Housatonic River, Massachusetts (USA) to determine if we could detect in situ population-level effects on largemouth bass (Micropterus salmoides) exposed to elevated levels of polychlorinated biphenyls (PCBs). Calculated whole-body PCB concentrations in adult bass in 2002 averaged 121 mg/kg (ra...

(1) Corresponding Author: Dudley W. Reiser dreiser@r2usa.com Abstract. - Spring-dominated streams (SDS) are known to differ from runoff-dominated streams (RDS) in a number of ways. Stability of flow and temperature are two character- istics most often associated with spring-dominated streams, but other ecosystem attrib- utes may also differ. The ef...

The Kerr Hydroelectric Project on the Flathead River in Northwest Montana historically provided load-following and peaking power. Typical daily operation of the project caused large and rapid fluctuations in discharge in the river downstream of the project. These flow fluctuations resulted in equally rapid stage fluctuations in the river. However,...

We provide evidence that the effects of sediment infiltration and deposition within fry emergence traps can lead to a potential negative bias when estimating survival to emergence (STE) of salmonid fry. Fry emergence traps were placed over 12 redds of brown trout Salmo trutta located in sections of three streams in the upper Clark Fork River system...

Fisheries habitat improvement frequently requires the exploitation of existing or artificial features of stream channels and associated floodplains. Along the Yankee Fork of the Salmon River, four series of off channel mining dredge ponds were connected to the river by excavating channels; surface-water control structures were installed to regulate...

Techniques commonly used to measure fine-sediment accumulation in streambed gravels can be labor and equipment intensive. We evaluated the sediment trapping capabilities of modified Whitlock–Vibert boxes under both laboratory and field conditions and compared the accumulated fine sediment to that contained in adjacent gravels as indicated by McNeil...

This paper presents the results of two nonstatistical surveys (completed in 1981 and 1986) that solicited information from state and federal agencies concerning instream flow issues and practices in North America. Forty-six states and 12 Canadian provinces responded to the survey. Fifteen of the 46 states reported legislative recognition of instrea...

A study was conducted to develop flushing flow recommendations for maintaining the quantity of salmonid spawning gravels in the North Fork of the Feather River, a regulated stream in California, U.S.A. This required the development of a technique which would prescribe flows to remove sediments from the gravels without removing the gravels themselve...

Techniques commonly used to measure fine-sediment accumulation in streambed gravels can be labor and equipment intensive. We evaluated the sediment trapping capabilities of modified Whitlock–Vibert boxes under both laboratory and field conditions and compared the accumulated fine sediment to that contained in adjacent gravels as indicated by McNeil...

We compared, in the laboratory, egg survival, and alevin and fry size of steelhead Oncorhyncus mykiss (formerly Salmo gairdneri) and chinook salmon O. tshawytscha after incubations in 16 mixtures of two distinct size-classes of sediment. Fine sediments were less than 0.84 mm in diameter, and coarse sediments were 0.84–4.6 mm in diameter. We incubat...

It has long been recognized that the regulation of stream flows can both positively and negatively affect existing fishery habitat and fish populations. This became most apparent in the western states where natural precipitation and runoff patterns had already produced well-defined periods of low streamflow.

The purpose of the project was to achieve full chinook salmon and steelhead trout production in the Panther Creek, Idaho, basin. Plans were developed to eliminate the sources of toxic effluent entering Panther Creek. Operation of a cobalt-copper mine since the 1930's has resulted in acid, metal-bearing drainage entering the watershed from undergrou...

The effects of prolonged stream desiccation on development of salmonid eggs were simulated for steelhead Salmo gairdneri and spring chinook salmon Oncorhynchus tshawytscha. Recently fertilized eggs were placed in artificial redds and subjected to controlled water flows in outdoor laboratory channels. Control redds were continuously submerged. “Dewa...

Fertilized green eggs of steelhead trout (Salmo gairdneri) and spring chinook salmon (Oncorhynchus tshawytscha) were incubated in moist cotton cloth to determine their ability to withstand periods of dewatering. Results indicated that salmonid eggs can develop normally without being submerged in water, if they remain moist. Dewatered hatching survi...

In November 1975, 60 Vibert boxes, each containing 100 green eggs of brown trout (Salmo trutta), were placed in artificial redds in the Laramie River in southeastern Wyoming. Water depths and, velocities were measured, and a representative substrate sample was collected at each site. Because of extensive ice cover in March 1976, only 20 of the 60 b...

One-hundred-twenty-one brown and 54 brook trout redds were located and intensively studied in seven stream sections of southeastern Wyoming. Depth, mean velocity, and point velocity were measured at the upper edge, pit, and tailspill of each redd. A representative substrate sample was collected from the tailspill and later analyzed using a series o...

Thesis (M.S.)--University of Wyoming, 1976. Includes bibliographical references (leaves [95]-100).

This patent describes a molten carbonate fuel cell power plant. It includes a thermally insulating enclosure: molten carbonate fuel cell means, disposed within the enclosure, for electrochemically reacting a fuel stream and an oxidant stream to generate an electrical current, heat, an anode exhaust stream and a cathode exhaust stream; reformer mean...

Reductions in streamflow over redds (chinook salmon Oncorhynchus tshawytscha and steelhead trout Salmo gairdneri) containing sediment (less than 0.84 mm) in quantities from 3-13% resulted in increased embryo mortality.-from US Govt Reports Announcements, 22, 1981

Thesis (Ph. D.)--University of Idaho, 1981. Includes bibliographical references (leaves [186]-191).