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PERMFILE117677
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PERMFILE117677
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Last modified
8/24/2016 10:13:25 PM
Creation date
11/25/2007 4:09:03 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
M2004009
IBM Index Class Name
Permit File
Doc Date
8/21/2000
Doc Name
Spiranthes diluvialis Survey Report
From
ERO Resources
To
Rocky Mountain Consultants
Media Type
D
Archive
No
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SPIRANTHES DILUVIALIS SURVEY REPORT <br />Ecological Descriptions and Site Features <br />The site consists of uplands in the southeastern portion and Boulder Creek with its <br />' associated floodplain in the northwest portion (Figure 2). Much of Boulder Creek has <br />been channelized in the past so that the channel is several feet below the historical <br />I <br />~ floodplain. Two large lakes occur on either side of Boulder Creek. Several wetlands aze <br />j scattered throughout the floodplain within old oxbows, man-made ponds, and shallow <br />I <br />depressions. <br />~~ Boulder Creek (Wetland 5 in Figure 2) is a perennial stream.. Within the project azea, <br />i <br />much of Boulder Creek has been channelized, which limits wetland development (Photo <br />2). Wetland vegetation along Boulder Creek is dominated by patches of sandbar willow <br />(Salix erigua) and reed canary-grass (Phalaris arundinacea). Wetlands occur mostly as a <br />narrow fringe along the channel. Where sand bars occur and where the floodplain <br />broadens, wetland vegetation occurs to a greater extent. A few sand bar islands covered <br />with sandbaz willows occur within the channel. <br />East of Boulder Creek is a large wetland complex (Wetland 2) isolated from the creek <br />j on mostly undeveloped land and appears to be supported entirely by ground water. It is <br />I probably an old stream channel and is shallow, narrow, and horseshoe-shaped, with <br />emergent plants throughout (Photo 2). Spikerush (Eleocharis palustris), cattail (Typha <br />latifolia), and sandbaz willow dominate the vegetation of this wetland. A riparian zone of <br />tis' <br />F.. <br />cottonwood (Populus deltoides), Russian olive (Elaeangus angustifolia), and snowberry <br />,-. <br />rr, (Symphoricarpos occidentalis) surrounds this wetland. <br />-I The western lake (Wetland 6) is an area that has been historically excavated for gravel <br />-~ mining. Wetlands occur along the lake shore with lazger wetlands forming where the <br />water table is closer to the soil. Around the edge of the lake, the vegetation is dominated <br />by stands of cattails with smaller patches of spikerush. Reed canary-grass, saltgrass <br />~ (Distichlis spicata), and foxtail bazley (Critesion jubatum) aze present in azeas that are not <br />'_l permanently saturated. Other species present, especially near the southern terminus of <br />the lake, are sand sputry (Spergularia sp.), rush (Juncus arcticus), showy milkweed <br />_"~ (Asclepias speciosa) and sandbaz willow (Photo 3). Many trees including plains <br />cottonwoods, Russian olives, and saltcedaz (Tamarir sp.) are scattered around the lake. <br />1 <br />ERO <br />Resources <br />Corporation <br />
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