The Sierra Nevada Alliance is holding its 11th annual conference, which includes speakers, workshops and field trips, at Lake Tahoe, Aug. 7 and 8.

The olorado Foundation for Water Education is offering tours of the Upper Colorado River Basin on June 23-25. The three-day tour will focus on urban water supply, recreational water use and agricultural water use.

The Third Annual Mono Basin Bird Chautauqua will be held on June 18-20 in Lee Vining, Calif. It’s "not your ordinary bird festival," say the organizers, and will include lectures, field trips and a wine benefit.

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