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

Desert Springs Resource Brief (2017)

Desert Springs Resource Brief Cover

This Desert Springs Monitoring brief compares the wet/dry status of desert spring sites in Joshua Tree National Park that are monitored by the Mojave Desert Network Inventory & Monitoring Program. We compared 45 sites visited in 2006 that were then revisited in the 2016-2017 monitoring field season. It was determined that 60% fewer springs had surface water in 2016 compared to 2006.
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Mojave Desert I&M Network Newsletter
The Oasis, Fall 2017

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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Streams and Lakes Monitoring Report 2015, Great Basin National Park (2017)

Groundwater level declines at Oasis of Mara Report

This report includes water quality and benthic macroinvertebrate assemblage data for GRBA streams, and water quality, water level, clarity, and ice-free period data for GRBA lakes. Stream discharge data will be published in a separate report, as the processing, analysis, and review of discharge records can delay their availability for reporting.
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Castle Mountains spring and water inventory (2016)

CAMO springs and water inventory

Mojave Desert Network Inventory and Monitoring staff conducted an inventory of seven potential spring or water resource locations in the recently-established Castle Mountains National Monument (CAMO). Several of these springs have been reported in the past to be important water resources for wildlife, particularly bighorn sheep.
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Lake Mead NRA
Vegetation Mapping Report (2016)

Lake Mead Vegetation Mapping Report

Vegetation inventory and mapping is a process to document the composition, distribution and abundance of vegetation types across the landscape and involves the skills and interactions of several parties; including the NPS, a vegetation classification team, and a mapping team.
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An Evaluation of Temperature and Precipitation for Parks of the Mojave Desert Network(2016)

Temp and Precip Report Cover

This report contains an evaluation of meteorological records from 23 sites in and near seven park units of the Mojave Desert Network (MOJN) to provide managers and planners with information on how climate is changing in their parks.
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Video: MOJN Hydrologist describes Physa snail monitoring at Parashant National Monument

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Last Updated: January 29, 2018 Contact Webmaster