id	author	title	date	pages	extension	mime	words	sentences	flesch	summary	cache	txt
en-wikipedia-org-3112		Columbia River - Wikipedia			.html	text/html	18734	2117	76	Water depths have been estimated at 1,000 feet (300 m) at Wallula Gap[33] and 400 feet (120 m) over modern Portland, Oregon.[34] Sediments were also deposited when the floodwaters slowed in the broad flats of the Quincy, Othello, and Pasco Basins.[32] The floods' periodic inundation of the lower Columbia River Plateau deposited rich sediments; 21st-century farmers in the Willamette Valley "plow fields of fertile Montana soil and clays from Washington's Palouse".[33] To the west and southwest the Columbia watershed borders a number of smaller watersheds that drain to the Pacific Ocean, such as the Klamath River in Oregon and California and the Puget Sound Basin in Washington.[192]	./cache/en-wikipedia-org-3112.html	./txt/en-wikipedia-org-3112.txt