National Park Service

Mojave Desert I&M Network (MOJN)

Mojave Desert Network

Death Valley National Park Can you guess which Park this is? Badwater Salt Flats at Death Valley National Park Mojave National Preserve Can you guess which Park this is? Lake Mead National Recreation Area Desert Tortoise at Mojave National Preserve Can you guess which Park this is? Mojave National Preserve Rock House at Mojave National Preserve Can you guess which Park this is? Joshua Tree National Park Joshua Tree National Park Can you guess which Park this is? Manzanar National Historic Site Can you guess which Park this is? Great Basin National Park Sunrise at Snake Creek, Great Basin National Park Can you guess which Park this is? Night Sky at Parashant National Monument Can you guess which Park this is? Tule Springs Fossil Beds NM Great Basin National Park Mojave National Preserve Darwin Falls, Death Valley National Park Golden Canyon, Death Valley National Park Horned Lizard at Death Valley National Park Death Valley National Park

The Mojave Desert Inventory & Monitoring Network (MOJN) is one of 32 monitoring networks across the NPS. These Networks were established to collect and analyze data about park natural resource conditions, take inventory of park species and natural features such as springs and streams, and monitor changes in these valuable resources over time.

MOJN is comprised of eight national park units located within the Mojave and Great Basin deserts of Nevada, Arizona, and California. The MOJN parks encompass the largest total area of all the networks in the lower 48 states (nearly 3.3 million hectares). Across these park units, MOJN I&M monitors the health and quality of five different vegetation communities, six subalpine lakes, and several hundred water features including oases, springs, streams, seeps, and wells.

This website delivers information about the Network's Inventory & Monitoring Program, the resources we monitor within the MOJN parks, and the scientific activities underway to help inform park managers and decision makers about the health of their natural resources. Learn more about specific topics by exploring the links on the left or visit the Network Parks page to learn more about these parks and discover the unique resources found at each of these special places.

Featured Information

Video: MOJN Hydrologist describes Physa snail monitoring at Parashant National Monument

Mojave Desert I&M Network Newsletter
The Oasis, Spring 2016

Mojave Desert I&M Network Newsletter, The Oasis Cover

The MOJN I&M Network Newsletter, The Oasis, is published biannually and aimed at providing information about current and upcoming projects and field activities, featured articles from the parks, the network, and our cooperators.
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Groundwater level declines at Oasis of Mara, Joshua Tree National Park (2016)

Groundwater level declines at Oasis of Mara Report

The Oasis of Mara is located in the Eastern Subbasin of the Joshua Tree Groundwater Basin, immediately to the south of Pinto Mountain Fault Zone. The fault impedes flow, forcing water to the surface. Historically, the oasis was a flowing spring with pools of water. However, the pools dried up in the 1940s due to declining groundwater levels.
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Joshua Tree National Park 2014 Selected Large Springs Pilot Data Report (2015)

Selected Large Springs Pilot Cover

This pilot study report summarizes the MOJN Selected Large Springs protocol data collected at Fortynine Palms Oasis and Smithwater Canyon Springs in Joshua Tree National Park in 2014, including water quantity, water quality, and benthic macroinvertebrates.
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A GRTS User's Manual for the SDrawNPS Package (2016)

Air Quality Study Cover

This manual serves as a companion user's manual for the SDrawNPS software package and provides statistical background on GRTS sampling, nonsampling error, weighting adjustment, and other details that arise when designing, implementing, and analyzing data from an ecological sample.
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Great Basin NP
2014 Streams & Lakes Data Report (2015)

Streams and Lakes 2014 Data Report

This report summarizes the MOJN Streams and Lakes protocol data collected at Great Basin National Park in the 2014 field seasons, including water quality, benthic macroinvertebrates, and lake levels.
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Paleontological resource inventory and monitoring (2016)

Paleontological Inventory and Monitoring Report Cover

Paleontological resources (fossils) are any remains of past life preserved in a geologic context. Despite the abundance and diversity of these resources throughout the National Park Service, until recently, few parks have had adequate baseline paleontological resource data (Internal Use Only).
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Last Updated: September 07, 2016 Contact Webmaster