Natural Resources Monitoring at Hovenweep National Monument

Round towers built on canyon edge, mountains in background
Hovenweep is a remote land of contrasts and harmony.

NPS/A.W. Biel

The Northern Colorado Plateau Network monitors climate, land surface phenology, landscape dynamics, springs and seeps, and water quality at Hovenweep National Monument. The results of that monitoring provide park managers with scientific information for decisionmaking.

Hovenweep National Monument was established by Presidential Proclamation in 1923, to preserve "groups of ruins, including prehistoric structures, the majority of which belong to unique types not found in other National Monuments, and show the finest prehistoric masonry in the United States." The monument is best known for protecting a collection of canyon-rim towers and villages that are the best preserved and protected, most visually striking, and most accessible examples of thirteenth-century Ancestral Puebloan architecture within the San Juan River Basin.

The monument comprises six distinct units. Elevation ranges from 1,585 meters (5,200 feet) at the Cajon unit to 2,060 meters (6,760 feet) at the Goodman Point unit. The climate in this high desert is dry, with an average of 305 millimeters (12 inches) of precipitation per year. Temperatures range from winter lows of -10 to 0°F to summer highs averaging 100–105°F, with a mean annual temperature of 52°F. The monument's shrubland types are influenced by precipitation, landscape position, soil depth, and alkalinity/salinity. Woodland associations are established on canyon sides, canyon rims, slopes, and hills. Herbaceous plant communities are a relatively minor component of the monument's vegetation, and riparian vegetation is rare. While permanent water sources are limited, a few springs and seeps in canyonheads produce water year-round.

Trespass livestock, exotic plant species invasion, adjacent land-use impacts, and increasing recreational use are the monument's main natural resource management concerns.

Quick Reads

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    Publications and Other Information

    Several protocols are monitored at the network scale. For reporting on climate, land surface phenology, and water quality, please visit Monitoring Reports.

    Inventory Report and Brief: Vegetation Classification and Mapping

    Source: Data Store Collection 4284 (results presented are a subset). To search for additional information, visit the Data Store.

    Inventory Reports: Climate, Herpetofauna, Invasive Exotic Plants, Mammals, and Vascular Plants

    Source: Data Store Collection 4285 (results presented are a subset). To search for additional information, visit the Data Store.

    Park Briefs

    Park briefs summarize completed and upcoming monitoring for a given year.

    Source: Data Store Saved Search 522. To search for additional information, visit the Data Store.

    Last updated: February 11, 2019