| Reach:
Grotto to Lodge
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Stream:
North Fork Virgin
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Watershed:
Virgin
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State: UT
Survey Date:
Thu, 05/20/2010 - 2:30pm
Background information available.
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| Observers:
Cheryl Decker with RSRA training class
E-mail: Cheryl_Decker@nps.gov
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Address: Zion National Park Springdale, UT 84767-1099
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| (UTM) Zone: 12
Upstream (UTM): 0326940E
Upstream (UTM): 4125487N
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| NAD: 83
Downstream (UTM): 0326253E
Downstream (UTM): 4124514N
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(UTM) Start: 0326539E
(UTM) Start: 4124981N
Upstream or down? Downstream
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Scores:
WQ 3.5
HG 2.4
F/AH 2.5
RV 3.8
TWH 3.3
Overall 3.1
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| Water Quality |
|
5 |
1 |
Algal Growth |
%=0 |
| 2 |
2 |
Channel Shading |
%=3.5 |
|
| 3.5 |
|
Mean Score |
| Notes: due to high flows, it was not a continuous count on the algae...which just waded here and there where safe, and felt around or picked up rocks to check for it, and then extrapolated to the 200 m transect... |
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|
| Hydrogeomorphology |
| 1 |
3 |
Floodplain Connection |
| 4 |
4 |
Vertical Bank Stability |
%=91 |
| 3 |
5 |
Hydraulic Habitat Diversity |
| 1 |
6 |
Riparian Area Soil Integrity |
| 3 |
7 |
Beaver Activity |
|
| 2.4 |
|
Mean Score |
|
Notes: Really too dangerous to measure indicator 3 (flow over 400 cfs), but it the channel was very clearly incised, so we scored a 1
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|
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| Fish/Aquatic Habitat |
| 1 |
8 |
Riffle-Pool Distribution |
| 1 |
9 |
Underbank Cover |
%=0.5 |
|
10 |
Cobble Embeddedness |
|
11 |
Aquatic Macroinvertebrate Diversity |
| 3 |
12 |
Large Woody Debris |
| 5 |
13 |
Overbank Cover |
|
| 2.5 |
|
Mean Score |
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Notes: too dangerous to get good sample for cobbles and indicator 11
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|
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| Riparian Vegetation |
| 3 |
14 |
Riparian Zone Plant Community Structure |
|
G=87%
S=54%
MC=1%
UC=1%
avg=35.8%
|
| 5 |
15 |
Shrub Demography and Recruitment |
| 5 |
16 |
Tree Demography and Recruitment |
| 1 |
17 |
Non-native Herbaceous Plant Species |
| 5 |
18 |
Non-native Woody Plant Species |
| 5 |
19 |
Grazing Impacts on Ground Cover |
| 2 |
20 |
Browsing Impacts on Shrubs and Small Trees |
|
| 3.8 |
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Mean Score |
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| Terrestrial Wildlife Habitat |
| 4 |
21 |
Shrub Patch Density |
| 2 |
22 |
Mid-canopy Patch Density |
| 4 |
23 |
Upper Canopy Patch Density |
| 3 |
24 |
Fluvial Habitat Density |
|
| 3.3 |
|
Mean Score |
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| Scores |
| WQ |
HG |
F/AH |
RV |
TWH |
OVERALL |
| 3.5 |
2.4 |
2.5 |
3.8 |
3.3 |
3.1 |
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