ABSTRACT Arizona NEMO has developed a mapping protocol and GIS data management and processing met... more ABSTRACT Arizona NEMO has developed a mapping protocol and GIS data management and processing methodology to record the changing perennial reaches of Arizona Rivers. Built on a local community volunteer monitoring program that has gathered on the third Saturday of June since 1999 to record where water flows in the SanPedroRiver, NEMO Wet/Dry has formalized the volunteer monitoring program and expanded the activity across Arizona. The NEMO research / outreach educational program is directed toward land-use decision-makers, watershed partnerships, environmental and community organizations, and the interested public. NEMO’s goal is to train watershed partnerships to initiate – and sustain – yearly Wet/Dry mapping so as to monitor the health of Arizona rivers. The goal of yearly monitoring is to create a long-term record of changes in river flow - while the record of any single year is interesting it is a record for multiple years that may tell what is really happening to the flow in the river. In addition, the goal of Wet/Dry is to build community participation, provide outreach education on the importance of long-term monitoring of our natural environment, and foster understanding of and responsibility for the health of Arizona watersheds. This presentation will include the 8-minute NEMO training video, GIS mapping protocol and GPS training documents, example field data sheets, and an overview of the monitoring results on several rivers in Arizona, in including the Agua Fria River.
Arizona NEMO has developed a mapping protocol and GIS data management and processing methodology ... more Arizona NEMO has developed a mapping protocol and GIS data management and processing methodology to record the changing perennial reaches of Arizona Rivers. Built on a local community volunteer monitoring program that has gathered on the third Saturday of June since 1999 to record where water flows in the SanPedroRiver, NEMO Wet/Dry has formalized the volunteer monitoring program and expanded the activity across Arizona. The NEMO research / outreach educational program is directed toward land-use decision-makers, watershed partnerships, environmental and community organizations, and the interested public. NEMO’s goal is to train watershed partnerships to initiate – and sustain – yearly Wet/Dry mapping so as to monitor the health of Arizona rivers. The goal of yearly monitoring is to create a long-term record of changes in river flow - while the record of any single year is interesting it is a record for multiple years that may tell what is really happening to the flow in the river. ...
Spatial and temporal rainfall variability over watershed scales impacts the hydrologic response w... more Spatial and temporal rainfall variability over watershed scales impacts the hydrologic response which in turn affects runoff, agricultural production, and soil water availability. Changes in the precipitation regime over decades may contribute to changes in vegetation, water supply and, over longer time scales, landscape evolution and geomorphology. This is especially important in the southwestern US, where urbanization is increasing pressure on limited water supplies. Daily, seasonal and annual precipitation volumes and intensities from the densely gaged network of raingages on the USDA-ARS Walnut Gulch Experimental Watershed (WGEW) are evaluated for multi-decadal trends in amount and intensity over a range of watershed scales (1.5 ha to 150 km2). The influence of teleconnections is tested for local-scale rainfall variability. Rainfall and runoff volume and rate variability are compared over the same spatial scales and over a 40 year period of high-quality runoff observations. The major findings of this study are that spatial variability of precipitation decreases exponentially with time scale; that long-term precipitation trends can be captured with a low spatial resolution; and that runoff from the 150 km2 watershed is not significantly affected by factors other than precipitation. High-resolution modeling studies on the WGEW are also discussed to further understand the processes and scales involved in hydrologic watershed response.
Long-term land-use and land cover change and their associated impacts pose critical challenges to... more Long-term land-use and land cover change and their associated impacts pose critical challenges to sustaining vital hydrological ecosystem services for future generations. In this study, a methodology was developed to characterize hydrologic impacts from future urban growth through time. Future growth is represented by housing density maps generated in decadal intervals from 2010 to 2100, produced by the U.S. Environmental Protection Agency (EPA) Integrated Climate and Land-Use Scenarios (ICLUS) project. ICLUS developed future housing density maps by adapting the Intergovernmental Panel on Climate Change (IPCC) Special Report on Emissions Scenarios (SRES) social, economic, and demographic storylines to the conterminous United States. To characterize hydrologic impacts from future growth, the housing density maps were reclassified to National Land Cover Database (NLCD) 2006 land cover classes and used to parameterize the Soil and Water Assessment Tool (SWAT) using the Automated Geospa...
Chapter 8 A Simulation Model for Erosion and Sediment Yield at the Hillslope Scale Leonard J. Lan... more Chapter 8 A Simulation Model for Erosion and Sediment Yield at the Hillslope Scale Leonard J. Lane, Mary H. Nichols, Lainie R. Levick, and Mary R. Kidwell USDA-ARS/Southwest Watershed ...Carson Military Reservation and trie Pinon Canyon Maneuver Site in Colorado. ...
ABSTRACT Arizona NEMO has developed a mapping protocol and GIS data management and processing met... more ABSTRACT Arizona NEMO has developed a mapping protocol and GIS data management and processing methodology to record the changing perennial reaches of Arizona Rivers. Built on a local community volunteer monitoring program that has gathered on the third Saturday of June since 1999 to record where water flows in the SanPedroRiver, NEMO Wet/Dry has formalized the volunteer monitoring program and expanded the activity across Arizona. The NEMO research / outreach educational program is directed toward land-use decision-makers, watershed partnerships, environmental and community organizations, and the interested public. NEMO’s goal is to train watershed partnerships to initiate – and sustain – yearly Wet/Dry mapping so as to monitor the health of Arizona rivers. The goal of yearly monitoring is to create a long-term record of changes in river flow - while the record of any single year is interesting it is a record for multiple years that may tell what is really happening to the flow in the river. In addition, the goal of Wet/Dry is to build community participation, provide outreach education on the importance of long-term monitoring of our natural environment, and foster understanding of and responsibility for the health of Arizona watersheds. This presentation will include the 8-minute NEMO training video, GIS mapping protocol and GPS training documents, example field data sheets, and an overview of the monitoring results on several rivers in Arizona, in including the Agua Fria River.
Arizona NEMO has developed a mapping protocol and GIS data management and processing methodology ... more Arizona NEMO has developed a mapping protocol and GIS data management and processing methodology to record the changing perennial reaches of Arizona Rivers. Built on a local community volunteer monitoring program that has gathered on the third Saturday of June since 1999 to record where water flows in the SanPedroRiver, NEMO Wet/Dry has formalized the volunteer monitoring program and expanded the activity across Arizona. The NEMO research / outreach educational program is directed toward land-use decision-makers, watershed partnerships, environmental and community organizations, and the interested public. NEMO’s goal is to train watershed partnerships to initiate – and sustain – yearly Wet/Dry mapping so as to monitor the health of Arizona rivers. The goal of yearly monitoring is to create a long-term record of changes in river flow - while the record of any single year is interesting it is a record for multiple years that may tell what is really happening to the flow in the river. ...
Spatial and temporal rainfall variability over watershed scales impacts the hydrologic response w... more Spatial and temporal rainfall variability over watershed scales impacts the hydrologic response which in turn affects runoff, agricultural production, and soil water availability. Changes in the precipitation regime over decades may contribute to changes in vegetation, water supply and, over longer time scales, landscape evolution and geomorphology. This is especially important in the southwestern US, where urbanization is increasing pressure on limited water supplies. Daily, seasonal and annual precipitation volumes and intensities from the densely gaged network of raingages on the USDA-ARS Walnut Gulch Experimental Watershed (WGEW) are evaluated for multi-decadal trends in amount and intensity over a range of watershed scales (1.5 ha to 150 km2). The influence of teleconnections is tested for local-scale rainfall variability. Rainfall and runoff volume and rate variability are compared over the same spatial scales and over a 40 year period of high-quality runoff observations. The major findings of this study are that spatial variability of precipitation decreases exponentially with time scale; that long-term precipitation trends can be captured with a low spatial resolution; and that runoff from the 150 km2 watershed is not significantly affected by factors other than precipitation. High-resolution modeling studies on the WGEW are also discussed to further understand the processes and scales involved in hydrologic watershed response.
Long-term land-use and land cover change and their associated impacts pose critical challenges to... more Long-term land-use and land cover change and their associated impacts pose critical challenges to sustaining vital hydrological ecosystem services for future generations. In this study, a methodology was developed to characterize hydrologic impacts from future urban growth through time. Future growth is represented by housing density maps generated in decadal intervals from 2010 to 2100, produced by the U.S. Environmental Protection Agency (EPA) Integrated Climate and Land-Use Scenarios (ICLUS) project. ICLUS developed future housing density maps by adapting the Intergovernmental Panel on Climate Change (IPCC) Special Report on Emissions Scenarios (SRES) social, economic, and demographic storylines to the conterminous United States. To characterize hydrologic impacts from future growth, the housing density maps were reclassified to National Land Cover Database (NLCD) 2006 land cover classes and used to parameterize the Soil and Water Assessment Tool (SWAT) using the Automated Geospa...
Chapter 8 A Simulation Model for Erosion and Sediment Yield at the Hillslope Scale Leonard J. Lan... more Chapter 8 A Simulation Model for Erosion and Sediment Yield at the Hillslope Scale Leonard J. Lane, Mary H. Nichols, Lainie R. Levick, and Mary R. Kidwell USDA-ARS/Southwest Watershed ...Carson Military Reservation and trie Pinon Canyon Maneuver Site in Colorado. ...
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