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NPS | 2021
The Yukon River basin encompasses 832,000 square-kilometers and is one of Earth's largest boreal-Arctic rivers. Characterized by a long, frozen winter season, the river demonstrates an abrupt…
NPS | 2021
Twenty years ago, ecological studies were often limited by the number of times biologists could find (relocate) their study animals. With the advent and now widespread use of Global Positioning…
NPS | 2021
The snow season has become shorter and the growing season longer over the past 20 years in Alaska's Arctic National Parks. The NPS Arctic Inventory and Monitoring Network (ARCN) uses MODIS (Moderate…
BOR | 2021
The Colorado River is the principal source of water for agriculture and riparian vegetation in Arizona, southern California, and southern Nevada. In the Lower Colorado River Basin, the BOR accounts…
BOR | 2013
The Bureau of Reclamation’s (Reclamation) Sedimentation and River Hydraulics Group uses light detection and ranging (lidar) data in conjunction with river and reservoir bathymetric surveys to develop…
NPS | 2013
One of the key early steps in preparing for sea-level rise and storm surge is ensuring that the geodetic “backbone,” the National Geodetic Survey (NGS) benchmarks, have long-term viability and…
BOR | 2013
Reclamation routinely monitors more than 3.5 million acres of agriculture and riparian vegetation along the Lower Colorado River from Hoover Dam to the Southerly International Border. Data generated…
BOR | 2013
The San Joaquin River Restoration Program is a comprehensive long-term effort to restore flows to the San Joaquin River in California’s Central Valley from Friant Dam to the confluence of the Merced…
BOR | 2013
Reclamation is responsible for administration of the Operating Criteria and Procedures (OCAP) for the Newlands Reclamation Project, Nevada. Section 418.8 of OCAP directs Reclamation and the Truckee-…
BOR | 2013
Reclamation is charged with measuring consumptive water use (water that is physically removed, either through export or evaporation) within the Upper Colorado River Basin. Irrigated agriculture…
NPS | 2013
Timucuan Ecological and Historic Preserve (TIMU), Jacksonville, FL, contains thousands of acres of healthy and productive salt marsh. These salt marshes provide crucial habitat to a wide variety of…
NPS | 2013
The Alaska Shallow Lake Monitoring Program, part of the NPS Inventory and Monitoring Program, monitors the water quantity and chemistry of shallow lakes along with the composition of the vegetation…