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Our objective was to model intermittency (perennial, weakly intermittent, or strongly intermittent) on small, ungaged streams in the Upper Colorado River Basin. Modeling streamflows is an important tool for understanding landscape-scale drivers of flow and estimating flows where there are no gaged records. We focused our study in the Upper Colorado River Basin, a region that is not only critical for water resources but also projected to experience large future climate shifts toward a drier climate.We used a random forest modeling approach to model the relation between intermittency on gaged streams (115 gages) and environmental variables. We then projected intermittency status to ungaged reaches in the Upper Colorado...
This is a habitat suitablilty map and component layers estimating bat watering habitat on the Colorado River bottomland in Utah during high flow conditions. The model combines the presence of prefered slow water channel types (backwaters, isolated pools and tributary mouths), with cover types amenable to bat overflights and drinking 'on-the-wing'. See Open File Report, Rasmussen and Shafroth, Colorado River Conservation Planning for geoprocessing details. For more detailed information, please visit this project's ScienceBase landing page at https://doi.org/10.5066/P927I36K, or the final report for this project at https://www.coloradomesa.edu/water-center/documents/rasmussen_shaftroth_2016_watercenter_cmu.pdf.
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This dataset represents vegetation communities, river channel and bare areas (often sand bars) mapped along the Colorado River bottomland in Utah, as of September 2010. Dominant cover types were classified as 'open flight', based on height, and potential interference with bat flights over water sources. Traditional image interpretation cues were used to develop the polygons, such as shape, size, pattern, tone, texture, color, and shadow, from high resolution, true color, aerial imagery (0.3m resolution), acquired for the project. Additional, public available aerial photos (NAIP, 2011) were used to cross-reference cover classes. As with any digital layer, this layer is a representation of what is actually occurring...
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In 1990 the US Geological Survey Fort Collins Science Center and National Park Service Water Resources Division established 133 permanent 1meter (m) X 2 m plots along the Gunnison River near Warner Point in Black Canyon of the Gunnison National Park. A one-dimensional hydraulic model was calibrated to determine the inundation necessary to inundate each plot, and this can be combined with daily flow data to determine the inundation duration or percentage of time a plot is under water. Occurrence of all plant species in these plots was determined in late July of 1990, 1994, 2001, 2006 and 2013. This data set includes 3 csv files of plot data. One file gives characteristics of plots, including plot name, inundating...
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We developed habitat suitability models for occurrence of three invasive riparian woody plant taxa of concern to Department of Interior land management agencies, as well as for three dominant native riparian woody taxa. Study taxa were non-native tamarisk (saltcedar; Tamarix ramosissima, Tamarix chinensis), Russian olive (Elaeagnus angustifolia) and Siberian elm (Ulmus pumila) and native plains/Fremont cottonwood (Populus deltoides ssp. monilifera and ssp. wislizenii, Populus fremontii), narrowleaf cottonwood (Populus angustifolia), and black cottonwood (Populus balsamifera ssp. trichocarpa and ssp. balsamifera). We generally followed the modeling workflow developed in Young et al. 2020. We developed models using...
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Estuary geomorphic units delineated at a scale of 1:1500 using a combination of (a) 03 September 2011* 0.3 meter resolution Microsoft/Digital Globe aerial imagery; and (b) elevation-colored and hillshaded digital elevation models from USGS backpack/jetski topobathy surveys (25 August 2011) for areas < MHHW and aerial lidar surveys (13-15 April 2012) for elevations > MHHW. *Image date of 3-Sep-11 corrected in metadata. During product generation the imagery date was believed to be 8-25-2011, as reported by DigitalGlobe reseller.
map background search result map search result map Predicted intermittency of small streams in the Upper Colorado River Basin based on historic flow data Conservation Planning for the Colorado River in Utah - Areas Open for Flight for Bat Watering Model Geomorphic habitat units derived from 2011 aerial imagery and elevation data for the Elwha River estuary, Washington Occurrence of plants in plots along the Gunnison River, Colorado, 1990-2017 2. Independent occurrence data for model assessment for woody riparian native and invasive plant species in the conterminous western USA Occurrence of plants in plots along the Gunnison River, Colorado, 1990-2017 Geomorphic habitat units derived from 2011 aerial imagery and elevation data for the Elwha River estuary, Washington Conservation Planning for the Colorado River in Utah - Areas Open for Flight for Bat Watering Model Predicted intermittency of small streams in the Upper Colorado River Basin based on historic flow data 2. Independent occurrence data for model assessment for woody riparian native and invasive plant species in the conterminous western USA