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Pawnee National Grassland is a United States National Grassland located in northeastern Colorado on the Colorado Eastern Plains. The grassland is located in the South Platte River basin in remote northern and extreme northeastern Weld County between Greeley and Sterling. It comprises two parcels totaling largely between State Highway 14 and the Wyoming border. The larger eastern parcel lies adjacent to the borders of both Nebraska and Wyoming. It is administered in conjunction with the Arapaho-Roosevelt National Forest from the U.S. Forest Service office in Fort Collins, Colorado, with a local ranger district office in Greeley.〔(【引用サイトリンク】publisher=U.S. Forest Service )〕 The grassland is in an especially depopulated area of the Great Plains. There was limited cultivation in the early 20th century but was withdrawn from farming after the Dust Bowl. The communities of Keota and Purcell are located within the grassland. The town of Grover is located directly between the two large parcels of the Grasslands near the Crow Creek. Briggsdale sits at the southern end where State Highway 14 and State Highway 392 meet. State Highway 71 traverses the eastern unit north of Stoneham. The eastern unit is drained by Pawnee Creek, a tributary of the South Platte. The western unit is largely drained by Crow Creek. Camping is available at the Crow Valley Recreation Area northwest of Briggsdale. The grassland contains several hiking trails, including one that allows foot access to the Pawnee Buttes, the most notable geologic feature of the Grasslands. Bird watching is a popular recreational activity for day hikers, especially at the Chalk Bluffs, a raptor nesting site. Recreational activities on the Pawnee Grasslands have been somewhat curtailed over the last 10 years due to the discovery of extractable oil and natural gas. According to the US Forest Service there are 63 active vertical oil and natural gas wells, and less than 3,000 acres from the 193,060 acres is protected from drilling.〔(【引用サイトリンク】publisher=U.S. Forest Service )〕 Image:PawneeGrasslandInColorado.PNG|Colorado, with Pawnee National Grassland highlighted in red. Image:Pawnee National Grassland location in Weld County.png|Weld County, Colorado with Pawnee National Grassland highlighted in red Image:Pawnee National Grassland.JPG|One of the signs marking the entrance to the grassland. This one is at the west side along State Highway 14. Image:Pawnee Grassland Butte.jpg|Rock formation near the Pawnee Buttes. Image:Pawnee Grassland Sunrise.jpg|Sunrise over the Grassland. Image:Pawnee Gulley.jpg|A gulley near the Pawnee Buttes. Image:Thundercloud over the Pawnee.jpg|A thundercloud rolling in over the prairie. Image:Pawnee Prairie.jpg|Uninterrupted prairie. ==References== 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Pawnee National Grassland」の詳細全文を読む スポンサード リンク
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