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Person

Brenda K Densmore

Associate Director for Hydrologic Studies
Nebraska Water Science Center

Email: bdensmore@usgs.gov
Office Phone: 402-328-4120
Fax: 402-328-4101
ORCID: 0000-0003-2429-638X

Location
Lincoln Industrial Park South
5231 South 19th
Lincoln , NE 68512-1271
US

Supervisor: Jason M Lambrecht
This dataset describes survey data collected for the Bureau of Reclamation (Reclamation), the agency in charge of regulating Colorado River water control operations impounding the Lake Powell reservoir. Additional intent of the collected data was to assure consistencies among gaging elevations at Glen Canyon Dam near Page, Arizona as well as verification and alignment of a recently published topobathymetric digital elevation model for Lake Powell. Glen Canyon Dam is a concrete arch-gravity dam on the Colorado River in northern Arizona and is the second largest man-made reservoir in the United States. The location was chosen to survey due to uncertainty in the local datum used by the Reclamation as well as uncertainties...
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This data release contains six zipped raster files of aerial thermal infrared (TIR) images of the South Loup River, North Loup River, and Dismal River named as LowerSouthLoup_AerialTIRImage_1m_2015.zip, MiddleSouthLoup_AerialTIRImage_50cm_2015.zip, UpperSouthLoup_AerialTIRImage_30cm_2015.zip, LowerDismal_AerialTIRImage_1m_2016.zip, UpperDismal_AerialTIRImage_50cm_2015.zip, and NorthLoup_AerialTIRImage_1m_2016.zip. This data release also includes a Reconn_Temperature_Gradient_X_sections.zip file which contains three ASCII comma separated values files with stream reconnaissance data which include stream temperature, streambed temperature, and vertical hydraulic gradient. This dataset also includes a Focused_discharge_points.zip...
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Modeling Escherichia coli in the Missouri River near Omaha, Nebraska, 2012-16: Model Inputs and Outputs
This data release contains the inputs and outputs from the development of Escherichia coli (E. coli) concentration models for the four Missouri River sites near Omaha, Nebraska. Model development, models, and results are published in the associated U.S. Geological Survey (USGS) report Densmore and others, 2020. Load Estimator models (LOADEST) (Runkel and others, 2004) were developed from the first 5 years of data (July 2012–September 2016). Sites include Missouri River at NP Dodge Park at Omaha, Nebr. (USGS Site ID 412126095565201), Missouri River at Freedom Park Omaha, Nebr. (USGS Site ID 411636095535104), Missouri River near Council Bluffs, Iowa (USGS Site ID 06610505), and Missouri River near La Platte, Nebr....
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These datasets are outputs from LOADEST regression models for estimating Escherichia coli (E. coli) concentration in the Missouri River at four sites near Omaha, Nebraska. The datasets described by this metadata are yearly (both water year, Mar - Nov, and recreation season, May - Sept) and daily E. coli concentrations predicted using developed LOADEST models. The development of LOADEST regression models at each of the four sites is described in Densmore and others, 2020. These data sets are in .csv format. The files are named Yearly_Ecoli_Predictions.csv and Daily_Ecoli_Predictions.csv. Sites include Missouri River at NP Dodge Park at Omaha, Nebr. (USGS Site ID 412126095565201), Missouri River at Freedom Park Omaha,...
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Sandbars are ubiquitous in wide, braided, sand-bed rivers throughout the world. In the Great Plains of the United States, recovery and expansion of emergent sandbar habitat (ESH) has been a priority in lowland rivers where the natural extent of sandbars has been degraded. Despite the importance of ESH to river ecology and management, quantitative observations of the deposition and erosion behaviors of populations of sandbars across long segments of braided rivers are rare. This data release provides a series of those observations in support of a case-study of emergent sandbar deposition and erosion behaviors in the Platte River in eastern Nebraska, a wide, sandy, braided river at the eastern margin of the Great...
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