My WebLink
|
Help
|
About
|
Sign Out
Home
Browse
Search
FLOOD05827
CWCB
>
Floodplain Documents
>
Backfile
>
5001-6000
>
FLOOD05827
Metadata
Thumbnails
Annotations
Entry Properties
Last modified
1/25/2010 7:07:01 PM
Creation date
10/5/2006 1:49:30 AM
Metadata
Fields
Template:
Floodplain Documents
County
Boulder
Community
Boulder
Stream Name
Boulder Creek
Basin
South Platte
Title
Boulder Creek Phase B
Date
12/1/1979
Prepared For
Boulder
Prepared By
UDFCD
Floodplain - Doc Type
Floodplain Report/Masterplan
There are no annotations on this page.
Document management portal powered by Laserfiche WebLink 9 © 1998-2015
Laserfiche.
All rights reserved.
/
133
PDF
Print
Pages to print
Enter page numbers and/or page ranges separated by commas. For example, 1,3,5-12.
After downloading, print the document using a PDF reader (e.g. Adobe Reader).
Show annotations
View images
View plain text
<br />FISH <br /> <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br />alder, chokecherry, and box elder. The ground cover consists of a <br /> <br />mixture of grasses, forbs, legumes and mosses. Downstream from the <br /> <br />vicinity of 28th Street to Arapahoe Road, the vegetation is less dense, <br /> <br />due to construction activity, mining of gravel, and grazing. From <br /> <br />Arapahoe Road east to Valley View Road and beyond, the flood plain <br />widens to encompass large areas of adjacent open space and farmland. <br /> <br />Some wetlands exist in this flood plain, but agricultural lands of <br /> <br />various types are the primary components of this high-plain ecosystem. <br /> <br />In this area, very few trees are present beyond the stream banks. The <br /> <br />primary exception is a 30-acre tract of deciduous woodland along Boulder <br /> <br />Creek upstream from Valley View Road, hereinafter called the Cottonwood <br /> <br />Grove. The Cottonwood Grove contains broad and narrow-leaved cotton- <br /> <br />wood, willow, and an undergrowth of shrubs and herbaceous plants. It <br /> <br /> <br />provides some of the best wildlife habitat in the Boulder area. It is <br /> <br /> <br />being used as a biological classroom by the University of Colorado and <br /> <br /> <br />other educational institutions. <br /> <br />The animal population of the fringes and adjacent area is most diverse. <br /> <br />The creek near the center of town contains the fewest number of animals <br /> <br />and has the least variation. In the central part of the city a signi- <br /> <br />ficant amount of stream-side vegetation has been removed thereby reduc- <br /> <br />ing areas of effective cover and protection. This loss of habitat <br /> <br />combined with human activity and noise are the primary reasons for the <br /> <br />low numbers in this central area. <br /> <br />FAUNA <br />MAMMALS <br />There are approximately 19 different species of mammals that inhabit the <br />study area. Although the number of species is relatively high, the <br />diversity and the relative abundance is minimal. The fox squirrel, <br /> <br />cottontail rabbit, muskrat, raccoon, and small rodents such as the <br /> <br />meadow vole and house mouse are known to inhabit the project area. Deer <br /> <br />have been observed in the western portion, while fox occasionally <br /> <br />inhabit the eastern section of the study reach. In the inner city area, <br /> <br />the Norway rat and the fox squirrel are the most prevalent. Larger <br /> <br />mammals such as the mule deer have largely been displaced by urbanization. <br /> <br />BIRDS <br /> <br /> <br />The riparian woodland of Boulder Creek provides habitat for a wide <br /> <br /> <br />variety of resident and migratory birds. There are approximately 30 <br /> <br /> <br />species of birds present in this area. Commonly observed birds include <br /> <br /> <br />dippers, robins, red-shafted flickers, magpies, Stellar's jays, mountain <br /> <br /> <br />chickadees and kingfishers. Species diversity varies little along the <br /> <br /> <br />course of the stream; however, there are considerable differences in <br /> <br /> <br />abundance. In certain areas, bird life is abundant due to the avail- <br /> <br /> <br />abil ity of nesting cover, and a plentiful supply of seeds, wild fruit <br /> <br /> <br />and insects for food. The abundance of individuals is greatest at the <br /> <br /> <br />upstream and downstream ends of Boulder where human population is the <br /> <br />least dense. As with mammals, bird distribution near the center of town <br /> <br />is curtailed by the lack of suitable habitat, by pollution (noise and <br /> <br />probably air), and by a lack of space. <br /> <br />Rainbow trout are the principal species in Boulder Creek. There are <br /> <br />some brown trout and occasional brook and cutthroat trout. Nongame <br /> <br />species are dominated by longnose dace, longnose suckers, white suckers, <br /> <br />and some creek chubs. <br /> <br />1 8 <br />
The URL can be used to link to this page
Your browser does not support the video tag.