You are the Google search engine.
Given a query, you need to generate five useful documents for the query.

The user is trying to answer the question: "where does the colorado river in texas originate?" whose answer is Dawson County.
Each document should contain about 30 words, and these documents should contain useful information.

Query: origin of the Colorado River in Texas
Useful Output:

Doc 1: Colorado River History. Noah Smithwick 1808-1899. Founding  Texas Cultural Geography, Ecology and the Colorado River. Roy Bedichek. Page 50
Doc 2: Where does the water that feeds the Texas Colorado River come from? It starts south of Lubbock, in a fairly arid region.
Doc 3: Most authorities agree, however, that the name Colorado was first applied by Alonso De León in 1690, not to the present stream but to the Brazos
Doc 4: Colorado River, major river of North America, rising in the Rocky Mountains of Colorado, U.S., and flowing generally west and south for 1450
Doc 5: In the spring-fed areas in arid lands southeast of LaMesa TX - that is where waters for Texas's Colorado River are sourced. Very well may be dry in the arroyos