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 water from lake tahoe come from?" whose answer is rain or snow.
Each document should contain about 30 words, and these documents should contain useful information.

Query: major sources of water for lake tahoe
Useful Output:

Doc 1: Lake Baikal at 25 million years old is the largest fresh water lake, containing over 20% of all surface fresh water on Earth. Although Tahoe is
Doc 2: Most of our drinking water comes from the Truckee River, which originates at Lake Tahoe and is fed by snow melt and rain throughout the Tahoe and Truckee River
Doc 3: Nevada had successfully tapped Lake Tahoe and the Truckee River as its primary sources for irrigation, industry and municipal water use.
Doc 4: Overview of Lakes and Reservoirs. One of the main sources of water in the Truckee River is Lake Tahoe. It is North America's largest alpine lake, and the
Doc 5: The rest drains through granitic soils, which are relatively sterile and create a good filtering system. Formed by uplifting, glaciation and