Question: What county is the community in where the Deckers Creek begins?

Context paragraphs:
Deckers, Colorado: Deckers is an unincorporated community along the South Platte River in Douglas County, Colorado, United States.  Stephen Decker built a general store here in the 1890s.  He later added a saloon and called the settlement "Daffodil."  The presence of natural springs led him to establish Deckers Mineral Springs and Resort in the popular region for fly-fishing.  Deckers received national attention for the June 2002 forest fire, known as the Hayman Fire, which burned thousands of acres on the outskirts of the Denver metro area.  The U.S. Post Office at Sedalia (ZIP Code 80135) now serves Deckers postal addresses.

Dairy Creek (Oregon): Dairy Creek is a 10.55 mi tributary of the Tualatin River in the U.S. state of Oregon.  It begins at the confluence of its east and west forks near the unincorporated community of Schefflin and meanders southeast across the Tualatin Valley to the Tualatin River near Hillsboro, in Washington County.  East Fork Dairy Creek begins at in Columbia County, slightly north of its border with Washington County, and flows generally south for 22 mi .  West Fork Dairy Creek, also about 22 mi long, forms at , near the unincorporated community of Tophill, and flows generally southeast.  Before railroads displaced river boats on the Tualatin, some steamships also worked the lower section of Dairy Creek, with plans to go as far up stream as Centerville.

Cascade, West Virginia: Cascade is an unincorporated community in Preston County, West Virginia, United States.  Cascade is located along West Virginia Route 7, Deckers Creek, and a CSX Railroad line 1.2 mi northwest of Morgantown.

Arthurdale, West Virginia: Arthurdale is an unincorporated community in Preston County, West Virginia, United States.  Arthurdale was named for Richard Arthur, former owner of the land on which it was built, who had sold the land to the federal government under a tax default.

Deckers Creek: Deckers Creek is a 24.6 mi tributary of the Monongahela River that runs through north-central West Virginia.  It begins west of Arthurdale and flows southeast, then north, then northwest towards Morgantown, where it empties into the Monongahela River.  The stream has been contaminated by various sources, though largely due to extractive resource mining and improper sewage disposal.  Recently, a conservation effort has been launched and conditions are improving, as the area continues to develop for recreational purposes.

Oaks Creek: Oaks Creek drains Canadarago Lake, which is situated in the north central region of Otsego County, New York.  The creek begins by Schuyler Lake, New York and flows southeast approximately 9.32 miles before converging with the Susquehanna River south of Cooperstown, New York, by Index, New York. From the source to Oaksville, New York the creek flows along Panther Mountain.  Fly Creek is a main tributary to oaks creek that converges with Oaks Creek south of Fly Creek, New York.

Upper Deckers Creek Wildlife Management Area: Upper Deckers Creek Wildlife Management Area, is located about 1 mi north of Reedsville, West Virginia in Preston County.  Upper Deckers Creek WMA is located on 56 acre , consisting of two small fishing ponds and surrounding forested rolling hills.

Cedar Creek (South Fork Eel River): Cedar Creek is an 11.2 mi tributary of the South Fork Eel River in Mendocino County in the U.S. state of California.  The creek begins southeast of Red Mountain, at an elevation of 778 ft .  It makes an S-curve west-northwest then bends sharply south, dropping into the valley of the South Fork Eel.  The confluence is south of the city of Leggett, on the river's right bank.  The only named tributary of Cedar Creek is Little Cedar Creek, a headwaters tributary.  Big Dann Creek joins the South Fork Eel on the same bank, just upstream of Cedar Creek, while the next major tributary downstream of Cedar is Rock Creek.  The Cedar Creek watershed is rugged and has few tributaries.

Little Beaver Creek (Lorain County, Ohio): Little Beaver Creek is a tributary of Beaver Creek (a.k.a. "Big Beaver Creek") in Lorain County, Ohio.  Little Beaver Creek begins north of the Lorain County Regional Airport and runs northerly until the Little Beaver joins with the Big Beaver in the present city-limits of Lorain, Ohio.  (There is a smaller tributary of the Little Beaver which begins near the bygone village of "Whiskeyville".)

Curtis Creek: Curtis Creek is a tidal creek located in Baltimore City and Anne Arundel County, Maryland.  It is a tributary of the cove Curtis Bay and is adjacent to the west of the South Baltimore community of Curtis Bay.  The creek begins at the confluence of Furnace Creek and Marley Creek in northern Anne Arundel County, Maryland and flows north about 2.5 mi into Curtis Bay (which now lies in the City of Baltimore) which opens to the east into the main branch and stem of the Patapsco River (serving as the Port of Baltimore) and Chesapeake Bay.

Supporting paragraphs: Deckers Creek Arthurdale, West Virginia
Answer: Preston County