Improving Colorado Mountain Highway Culvert Stream Crossings for Trout Passage

Highways can be effective barriers to animal migration. Where highways cross over streams, a passageway, typically a culvert, not designed for fish access can cut off an organism from miles of habitat. Traditional methods of culvert design, to convey floodwaters, reduced access to aquatic and riparian range. The Colorado Department of Transportation likely has numerous culverts that restrict aquatic passage. This paper provides guidance to CDOT for assessment of stream geomorphic conditions affecting culvert performance for fish passage, understanding aquatic organism habitat requirements, and incorporating ecological parameters into culvert designs that benefit fish and other organisms. A case study illustrates culvert problems in a difficult geomorphic setting including a fish passage assessment to evaluate stream stability for long-term culvert reliability.

Landfill Leachate Toxicity to Oncorhynchus mykiss (Rainbow Trout) at the Merrick Landfill

At the Merrick Landfill, located outside of North Bay (Ontario, CA), an investigation into the potential for an environmental impact to the Little Sturgeon River as a result of landfill leachate discharge was undertaken using toxicity testing using 96 hour acute lethality on Oncorhynchus mykiss (Rainbow Trout). Landfill leachate may present a risk to receiving environments as it is comprised of an array of chemicals including organics, ammonia, and metals. Testing was conducted in three phases, firstly testing was completed on site throughout an existing natural attenuation zone where the presence of several groundwater seeps down gradient of the site had been identified to determine the effectiveness of the existing leachate control features at reducing the environmental risks. These tests indicated that the existing capture strategies were largely effective at reducing toxicity risks to the receiving environment. Testing was also completed on two pilot-scale hybrid-passive treatment systems to determine their effectiveness for leachate treatment. Summer performance of a constructed gravel wetland system was also shown to be effective at reducing the toxicity of the landfill leachate at the site. Lastly in order to support evaluation of leachate treatment requirements, a toxicity identification evaluation (TIE) was performed to determine the principle cause of toxicity within the leachate. Based on water chemistry analyses of samples collected at various locations at the site, the TIE identified ammonia toxicity as the primary source of toxicity in the leachate, with a secondary focus on metal toxicity.

Pharmacokinetics of toxic elements in rainbow trout /

Mode of access: Internet.

Chalkstream and moorland, thoughts on trout-fishing.

Mode of access: Internet.

Family circle's guide to trout flies and how to tie them.

Mode of access: Internet.

Trout flies, naturals and imitations.

Includes bibliography.

Salmon and trout angling: its theory, and practice on southern stream, torrent river, and mountain loch,

Mode of access: Internet.

Trout waters and how to fish them.

"References": p. [311]-316.

Trout fishing and trout flies.

Mode of access: Internet.

Notes on the planting of salmon and trout fry,

Cover-title.

The Blackwater chronicle : a narrative of an expedition into the land of Canaan, in Randolph county, Virginia, a country flowing with wild animals, such as panthers, bears, wolves, elk, deer, otter, badger, &c., &c., with innumerable trout--by five adventurous gentlemen, without any aid of government, and solely by their own resources, in the summer of 1851 /

Generally attributed to John Pendleton Kennedy, brother of the author. cf. H.T. Tuckerman, Life of J.P. Kennedy, 1871, p. 26 and 421.

Domesticated trout: how to breed and grow them.

Mode of access: Internet.

Practical trout culture /

Bibliography: p. 142-143.

The advantages of rearing brook trout fingerlings from selected breeders ...

Cover-title.

The wonderful trout /

Mode of access: Internet.