Huey-Nut-C-Cycle-2006 English utf8 dataset McMurdo Dry Valleys LTER http://mcmlter.org/ 2016-01-04 ISO 19115-2 Geographic Information - North American Profile Metadata - Data with Biological Extensions ISO 19115-2:2009(E) Huey Creek streamflow routing and subsurface water flow, 2006 2016-01-04 publication Joshua Koch United States Geological Survey (USGS) https://www.usgs.gov/staff 4210 University Dr. Anchorage AK 99508 US jkoch@usgs.gov http://alaska.usgs.gov/staff/staffbio.php?employeeid=426 pointOfContact documentDigital Huey Creek is a meltwater stream that flows into the north end of Lake Fryxell in Taylor Valley.  We conducted a comparative study to determine flow balances, flow routing in Huey Creek in 2006. The hypothesis is that truncated hydrographs on Huey Creek (and other streams) are related to large subsurface storage potential that fills/empties over the daily flood pulse.  The goal of the simulation and experimental data comparison described here  is to use a coupled groundwater / surface flow model to test this hypothesis.   Representative figure: Simulated and observed discharges for (A) the full model; B) kinematic wave routing and subsurface flow, but no anabranching; C) kinematic wave routing, but no subsurface flow, and no anabranching.  D) displays the difference between observations and the upstream boundary condition for each simulation. Name: Inigo San Gil Role: data manager completed McMurdo Dry Valleys LTER http://mcmlter.org/ unknown Data published in DEIMS in 2016 English 2006-01-09 https://mcm.lternet.edu/sites/default/files/data/ResultsSummaryCalcs.csv Huey-Nut-C-Cycle-2006 Summary eng; US McMurdo Dry Valleys LTER Huey-Nut-C-Cycle-2006 Summary Data Source Definition : Huey-Nut-C-Cycle-2006 summary results data spreadsheet details. Record Delimiter : \r\n Number of Header Lines : 1 Number of Footer Lines : 1 Orientation : Column Field Delimiter : , false Time (hrs) Time (hrs), the simulation time Q1 Q1 stream discharge in m3/hr at synoptic site location A. Q2 Q2 stream discharge in m3/hr at synoptic site location B. Q3 Q3 stream discharge in m3/hr at synoptic site location C Q7 Q7 stream discharge in m3/hr at synoptic site location D Q8 (gage) Q8 (gage) stream discharge in m3/hr at synoptic site location E, which corresponds to the gage As the amount of water lost to storage in the anabranches (in m3), defined as the difference between 'Q2' and 'Q7' multiplied by the 1 hr timestep. (negative numbers indicate recharge from the aquifer to the stream) Time (hrs) Time (hrs) simulation time SWRADIN incoming solar radiation Q8 Q8 stream discharge in m3/hr at gage Difference amount of water lost to storage in the anabranches (in m3), defined as the difference between 'Q2' and 'Q7' multiplied by the 1 hr timestep. (negative numbers indicate recharge from the aquifer to the stream) Observed The discharge observed or measured in cubic meters per hour error error squared difference between the observed and simulated (Q8) gage discharge (m6/hr2) RMSE RMSE oot mean squared error, which is the square root of the mean error' value kwr,g,qdiv storage cumulative stored water volume for each hour in m3 storage change (%) percent change in storage volume between each subsequent time step DBF https://mcm.lternet.edu/sites/default/files/data/ResultsSummaryCalcs.csv https://mcm.lternet.edu/sites/default/files/data/huey-streamflow-routing-subsurface-flow-modeling-input-files.zip Modeling input files huey streamflow-routing subsurface-flow eng; US McMurdo Dry Valleys LTER Modeling input files huey streamflow-routing subsurface-flow Data Source Definition : The description of the modeling input files for the Huey Creek streamflow and subsurface flow balances study Number of Header Lines : 0 Orientation : Column Field Delimiter : , false DBF https://mcm.lternet.edu/sites/default/files/data/huey-streamflow-routing-subsurface-flow-modeling-input-files.zip dataset Field data collection: Field data collection was restricted to GPS mapping of the stream and anabranch locations, and discharge measurements made at several locations in the channel and monitored continuously at the downstream gaging station.     Model approach: The inflow hydrograph was estimated based on the relationship between incoming solar radiation and discharge in a short stream without large subsurface storage potential (Canada Stream).  Stream slope was calculated from the GPS survey and GIS data available on the mcmlter website, and roughness was calculated by solving Manning’s equation based on rod and pygmy measurements.  Channel morphology was also determined from rod and pygmy measurements.  The outflow hydrograph was known from the downstream gage on Huey Creek.  Hydraulic conductivity, evapotranspiration, and the discharge at which stream braids filled with water were calibrated to minimize the difference between the inflow and outflow hydrographs.    Modeling code used: MODFLOW for subsurface flow (water.usgs.gov/nrp/gwsoftware/modflow.html) , coupled with SFR2, a stream flow routing package (pubs.usgs.gov/tm/2006/tm6A13/)   Model input files: The final run template is included.  This contains the model domain, hydrologic inputs and streamflow routing rules (.sfr file).   The three data sets can be run from this by 1) adjusting hydraulic conductivity in the .lpf and .sfr files (10 m/hr for subsurface flow or 10-6 for no subsurface flow), and 2) turning on or off the anabranches by setting the discharge threshold at which the anabranches fill (65 m3/hr  for anabranching 650 for no anabranching). Simulation output: One of the three final runs is included.  This contains the hydrographs at the top and bottom of the anabranching reach and at the gage (fin2,fin7,and fin8.ggo, respectively) and the summary (.lst) file.   Aquifer hydraulic head (.fhd) and the budget file (.bud) were not included because of the large file size (examples of .fhd results for active and inactive anabranching conditions (ie, high and low flow) can be found in the publication).  A results summary file is included ‘ResultsSummaryCalcs.xlsx’, which includes the method for comparing model runs and quantifying error, and also includes calculations for storage change and exchange rate.   The methodology is fully explained in the publication.  Metadata Access Constraints: none Metadata Use Constraints: none annually McMurdo Dry Valleys LTER http://mcmlter.org/ pointOfContact