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Fishes of the Upper Colorado River Basin have one of the highest levels of endemism in the United States. The range and abundance of these fish has declined over the last century and continues to decline as a result of legacy impacts from past management practices, current water management, interactions with non-natives, and other impacts. Seven of these fish are considered imperiled by the American Fisheries Society and four are listed as endangered by the U.S. Fish and Wildlife Service. We applied a complementarity-based approach to develop priority ranks (0 – 1; low to high) for catchments in the Upper Colorado River Basin. We used methods and a framework that we had previously developed for the Lower Colorado...
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This dataset contains the predicted probability of occurrence for modeled distributions of creek chub.
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This dataset contains the predicted probability of occurrence for modeled distributions of walleye.
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This USGS Data Release represents Soil-Water Balance (SWB) groundwater recharge modeling results for the Upper Colorado River Basin (UCRB). The data release was produced in compliance with 'open data' requirements as a way to make the scientific products associated with USGS research efforts and publications available to the public. This dataset comprises SWB model results from runs using projected climate data, summarized by water year, and there are 4 separate datafiles associated with this Data Release: 1. SWB model results for actual evapotranspiration (AET), summarized by water year from 1951 through 2099 2. SWB model results for potential evapotranspiration (PET), summarized by water year from 1951 through...
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This generalized geology dataset was developed as input to a total dissolved solids Spatially Referenced Regressions on Watershed Attributes (SPARROW) model for the Upper Colorado River Basin (UCRB; Kenney and others, 2009) and for a more recent update to that model. The largest source of naturally generated dissolved solids in streams of the UCRB is the rocks underlying stream basins, particularly rocks high in dissolvable minerals. For the purposes of modeling, the scale of the geologic dataset optimally should be similar to the scale of the stream-catchment network used in the model but simplified to reduce the number of geologic units represented in the data. This dataset was developed to meet both scale and...
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Our objective was to model 7-day minimum flow (mean of the annual minimums of a 7-day moving average for each year [cubic feet per second]) 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 7-day minimum flow on gaged streams (115 gages) and environmental variables. We then projected 7-day minimum...
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Our objective was to model 7-day minimum flow (mean of the annual minimums of a 7-day moving average for each year [cubic feet per second]) 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 7-day minimum flow on gaged streams (115 gages) and environmental variables. We then projected 7-day minimum...
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This USGS Data Release represents Soil-Water Balance (SWB) groundwater recharge modeling results for the Upper Colorado River Basin (UCRB). The data release was produced in compliance with 'open data' requirements as a way to make the scientific products associated with USGS research efforts and publications available to the public. There are 4 separate datasets associated with this Data Release: 1. SWB model results from simulations run using observed climate data, summarized by water year from 1951 through 2010 2. SWB model results from simulations run using projected climate data, summarized by month and UCRB sub-basin from 1950 through 2099 3. SWB model results from simulations run using projected climate data,...
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This USGS Data Release represents Soil-Water Balance (SWB) groundwater recharge modeling results for the Upper Colorado River Basin (UCRB). The data release was produced in compliance with 'open data' requirements as a way to make the scientific products associated with USGS research efforts and publications available to the public. This dataset comprises SWB model results from runs using historical climate data, and there are 5 separate datafiles associated with this Data Release: 1. SWB model results for actual evapotranspiration (AET), summarized by water year from 1951 through 2010 2. SWB model results for potential evapotranspiration (PET), summarized by water year from 1951 through 2010 3. SWB model results...
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Stream flow in the Colorado River and Dolores River corridors has been significantly modified by water management, and continued flow alteration is anticipated in future decades with projected increases in human water demand. Bottomland vegetation has been altered as well, with invasion of non-native species, increases in wildfire and human disturbance, and currently, rapid shifts in riparian communities due to biological and mechanical tamarisk control efforts. In light of these conditions, land managers are in need of scientific information to support management of vegetation communities for values such as healthy populations of sensitive fish and wildlife species and human recreation. We propose to address these...
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This dataset contains the predicted probability of occurrence for modeled distributions of speckled dace.
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This dataset contains the predicted probability of occurrence for modeled distributions of brook trout.
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This dataset contains the predicted probability of occurrence for modeled distributions of utah chub.
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This dataset contains the predicted probability of occurrence for modeled distributions of red shiner.
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This dataset contains the threat index for streams and catchments in the Upper Colorado Basin.
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Our objective was to model frequency of low-pulse events 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 frequency of low-pulse events on gaged streams (115 gages) and environmental variables. We then projected frequency of low-pulse events to ungaged reaches in the Upper Colorado River Basin...
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Modeling streamflow is an important approach for understanding landscape-scale drivers of flow and estimating flows where there are no streamgage records. In this study conducted by the U.S. Geological Survey in cooperation with Colorado State University, the objectives were to model streamflow metrics on small, ungaged streams in the Upper Colorado River Basin and identify streams that are potentially threatened with becoming intermittent under drier climate conditions. The Upper Colorado River Basin is a region that is critical for water resources and also projected to experience large future climate shifts toward a drying climate. A random forest modeling approach was used to model the relationship between streamflow...
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Given the importance of Upper Colorado River Basin (UCRB) snowpack as the primary driver of streamflow (water supply) for the southwestern United States, the identification of Pacific Ocean climatic drivers (e.g., sea surface temperature (SST) variability) may prove valuable in long-lead-time forecasting of snowpack in this critical region. Previous research efforts have identified El Ni´┐Żo?Southern Oscillation (ENSO) and Pacific Decadel Oscillation (PDO) as the main drivers for western U.S. snowpack, but these drivers have limited influence on regional (Utah and Colorado) UCRB snowpack. The current research applies for the first time the Singular Value Decomposition (SVD) statistical method to Pacific Ocean SSTs...
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This dataset contains the predicted probability of occurrence for modeled distributions of mottled sculpin.
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This dataset contains the predicted probability of occurrence for modeled distributions of black bullhead.


map background search result map search result map Identification of Pacific Ocean sea surface temperature influences of Upper Colorado River Basin snowpack Science-Based Riparian Restoration Planning on the Colorado and Dolores Rivers: A Decision Support Tool and Investigation of Habitat Complexity at Tributary Junctions Conservation Assessment for Native Fish in the Upper Colorado River Basin Black Bullhead Predicted Probability of Distribution Mottled Sculpin Predicted Probability of Distribution Red Shiner Predicted Probability of Distribution Utah Chub Predicted Probability of Distribution Speckled Dace Predicted Probability of Distribution Brook Trout Predicted Probability of Distribution Walleye Predicted Probability of Distribution Creek Chub Predicted Probability of Distribution Upper Colorado River Basin Catchment Threat Index Modeled Streamflow Metrics on Small, Ungaged Stream Reaches in the Upper Colorado River Basin: Data Predicted frequency of low-flow pulse events for small streams in the Upper Colorado River Basin under historic hydrologic conditions. Predicted 7-day minimum flow of small streams in the Upper Colorado River Basin based on historic flow data Predicted 7-day minimum flow Soil-Water Balance Groundwater Recharge Model Results for the Upper Colorado River Basin UCRB SWB Model Results - Projected Climate Data - Water Years 1951-2099 UCRB SWB Model Results - Observed Climate Data - Water Years 1951-2010 Generalized 1:500,000-scale geology of the Upper Colorado River Basin Science-Based Riparian Restoration Planning on the Colorado and Dolores Rivers: A Decision Support Tool and Investigation of Habitat Complexity at Tributary Junctions Identification of Pacific Ocean sea surface temperature influences of Upper Colorado River Basin snowpack Conservation Assessment for Native Fish in the Upper Colorado River Basin Black Bullhead Predicted Probability of Distribution Mottled Sculpin Predicted Probability of Distribution Red Shiner Predicted Probability of Distribution Utah Chub Predicted Probability of Distribution Speckled Dace Predicted Probability of Distribution Brook Trout Predicted Probability of Distribution Walleye Predicted Probability of Distribution Creek Chub Predicted Probability of Distribution Upper Colorado River Basin Catchment Threat Index Soil-Water Balance Groundwater Recharge Model Results for the Upper Colorado River Basin UCRB SWB Model Results - Projected Climate Data - Water Years 1951-2099 UCRB SWB Model Results - Observed Climate Data - Water Years 1951-2010 Generalized 1:500,000-scale geology of the Upper Colorado River Basin Predicted 7-day minimum flow Predicted frequency of low-flow pulse events for small streams in the Upper Colorado River Basin under historic hydrologic conditions. Predicted 7-day minimum flow of small streams in the Upper Colorado River Basin based on historic flow data Modeled Streamflow Metrics on Small, Ungaged Stream Reaches in the Upper Colorado River Basin: Data