2021-05-20_PERMIT FILE - C1981035 ‎(17)‎

• Permit No: C1981035
• IBM Index Class Name: Permit File
• Doc Date: 5/20/2021
• Doc Name: Fish and Wildlife Information
• Section_Exhibit Name: KII Appendix 08
• Media Type: D
• Archive: No

Level 2 Potential Conservation Area (PCA) Report
Name Middle La Plata River Site Code S.USCOHP"24630
SITE DESIGN
Site Map Y - Yes Mapped Date 12/10/2003
Designer Culver, D.R.
Boundary Justification
The boundaries incorporate an area that will allow for the natural hydrological processes from surrounding
drainages. The boundaries encompass the occurrence with a 500 - 1,000 foot buffer that follows the stream
channel from the Town of Hesperus to south of Breen. Highway 140 is used as a boundary as well as a
natural topographic feature. It should be noted that the hydrological processes necessary to the element are
not fully contained by the site boundaries.
Primary Area 1,207.45 Acres 488.64 Hectares
SITE SIGNIFICANCE
Biodiversity Significance Rank B5: General Biodiversity Interest
Biodiversity Significance Comments
This site drawn for a degraded (D -ranked) example of a globally vulnerable (G3/S2) narrowleaf
cottonwood/river birch plant community (Populus angustifolia/Betula occidentalis). The narrowleaf
cottonwood/river birch plant association is documented from Colorado, Idaho, Nevada, Utah, and Wyoming.
This riparian woodland is uncommon and occurs locally throughout much of its range (Carsey et al. 2003).
Although this association appears globally stable, the condition of high quality occurrences is extremely
threatened because of easy access to this relatively low elevation community.
Other Values Rank No Data
Full Citation
Other Values Comments
Carsey, K., G. Kittel, K. Decker, D. Cooper, and D. Culver. 2003. Field guide to the
No Data
wetland and riparian plant associations of Colorado. Prepared for the Colorado
LAND MANAGMENT ISSUES
Land Use Comments
Program, Fort Collins, CO.
No Data
March, M. and D. Culver. 2003. Colorado Natural Heritage Program Field Survey for
Natural Hazard Comments
La Plata County Wetlands.
No Data
ADDITIONAL TOPICS
Exotics Comments
No Data
Offsite
VERSION
No Data
12/10/2003
Information Needs
No Data
ASSOCIATED ELEMENTS OF BIODIVERSITY
Element
Global State Driving
State ID State Scientific Name
State Common Name Rank Rank Site Rank
24884 Populus angustifolia /Betula occidentabs Montane Riparian Forest G3 S3 Y
Woodland
REFERENCES
Reference ID
Full Citation
159854
Carsey, K., G. Kittel, K. Decker, D. Cooper, and D. Culver. 2003. Field guide to the
wetland and riparian plant associations of Colorado. Prepared for the Colorado
Department of Natural Resources, Denver, CO by the Colorado Natural Heritage
Program, Fort Collins, CO.
184533
March, M. and D. Culver. 2003. Colorado Natural Heritage Program Field Survey for
La Plata County Wetlands.
ADDITIONAL TOPICS
Additional Topics
No Data
VERSION
Version Date
12/10/2003
Version Author Culver, D.R.
Copyright© 2017. Colorado State University. Colorado Natural Heritage Program. All Rights Reserved.
Print Date 7/12/2017 2