Site Basic Record 

 MAIDEN EXCLOSURE 



From the Moose Creek Road exit on Interstate 15 (exit #99) south of Divide (town), proceed 

 north and west on the frontage road 0.5 mile to a junction with a gravel road. Take this road 

 south 1.2 miles to a Y intersection. Go left, then right ca. 1 mile to a bridge and cross the 

 Big Hole River. The exctosure is to the right. 



The site is an old point bar on the Big Hole River. The exclosure was established in 198A 

 (pers. comm.. Jack Jones, BLM, Butte). 



COUNTY: Beaverhead 



USGS QUADRANGLE: MELROSE 



TOUNSHIP-RANGE: 001S009U SECTION: 32 

 QUARTER/ADDITIONAL SECTIONS: NE4SE4 



BOUNDING RECTANGLE: S: 454200N N: 454214N E: 1124405U U: 1124412W 



BOUNDARY JUSTIFICATION: 



APPROXIMATE ACREAGE: 



GENERAL RATING: 5 



No G3 element present. 



BIODIVERSITY SIGNIFICANCE: B4 



The Elymus cinereus community type present is tentatively ranked G4S2?. 



OTHER VALUES: V2 



The site provides a combination of quality riparian wildlife habitat and a moderately large 

 area relatively protected from domestic grazing. 



PROTECTION URGENCY: PI 



The fence at the northwest corner of the exclosure does not extend to the river and is 

 ineffective in keeping cattle out. This fence needs to be extended and a fence along the river 

 may need to be installed to prevent cattle entry. 



MANAGEMENT URGENCY: M3 



Remove all Centaurea maculosa plants. 



CONSERVATION INTENT: Maintain as an exclosure. 



PROTECTION COMMENTS: 



LAND USE: The site has largely been protected from livestock grazing since exclosure establishment in 



1984. Prior to exclosure establishment, the site was evidently heavily used by livestock. Also, 

 a portion of the site was used as a debris dump prior to exclosure establishment. 



NATURAL HAZARDS: None. 



EXOTICS: Centaurea maculosa, Bromus tectorum, Poa pratensis, and Phleum pratense are all well 



represented at various locations within the exclosure and pose a threat to the quality of the 

 vegetation present. 



OFF-SITE LAND USES: Surrounding uplands are moderately to heavily grazed and a large quarry ocurs 

 adjacent to the exclosure. These factore may potentially result in degradation 

 of vegetation quality within the exclosure. 



INFORMATION NEEDS: The BLM monitors this exclosure. Contact the BLM office in Butte for periodic 

 updates on vegetation characteristics. 



MANAGEMENT NEEDS: Upgrade fence adjacent to river and perhaps install a fence along the river. 

 Remove Centaurea maculosa plants. 



MANAGEMENT COMMENTS: 



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