• View of the Monument across the Snake River

    Hagerman Fossil Beds

    National Monument Idaho


Crested Wheatgrass



The Monument is home to a variety of native grasses such as: wheatgrass, bluegrass, Indian ricegrass, and Great Basin wildrye to name a few.

Unfortunately, the grass family includes a large number of invasive weeds and the once plentiful native grasses are now being dominated by the non-native and highly invasive cheat grass (Bromus tectorum).

Most of the natural vegetation on nonpublic land has been replaced by agricultural crops. The numerous acres of irrigated farmlands now support a variety of grasses, grain crops, sugar beets, and potatoes.

Field of Cheatgrass
Highly invasive cheatgrass dominates this field.
Non-native and highly invasive cheatgrass.

Did You Know?

Hagerman Valley as it appears today.

Lake Bonneville overflowed its rim about 15,000 years ago in southeastern Idaho near the present day city of Pocatello. The Snake River cut down through the ancient flood plain sediments and deepened and widened the Hagerman valley.