uid=MCM,o=EDI,dc=edirepository,dc=org all public read Huey-Nut-C-Cycle-2006 Joshua Koch

4210 University Dr. Anchorage AK 99508 US

jkoch@usgs.gov http://alaska.usgs.gov/staff/staffbio.php?employeeid=426 McMurdo Dry Valleys LTER http://mcmlter.org/ Inigo San Gil

Department of Biology, MSC03 2020 University of New Mexico Albuquerque NM 87131 US

(505) 277-2625 (505) 277-2541 isangil@lternet.edu data manager 2016-01-26 English

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.

hydrology hyporheic exchange hyporheic zone Station Keywords hydrography hyporheic modeling models LTER Controlled Vocabulary

This data package is released under the Creative Commons Attribution 4.0 International License (CC BY 4.0; http://creativecommons.org/licenses/by/4.0/), which allows consumers (hereinafter referred to as “Data Users”) to freely reuse, redistribute, transform, or build on this work (even commercially) so long as appropriate credit is provided. Accordingly, Data Users are required to properly cite this data package in any publications or in the metadata of any derived products that result from its use (in whole or in part). A recommended citation is provided on the summary metadata page associated with this data package in the McMurdo Dry Valleys LTER Data Catalog (https://mcmlter.org/data), and a generic citation may be found on the summary metadata page in the repository where this data package was obtained. When these data contribute significantly to the contents of a publication, Data Users must also acknowledge that data were provided by the NSF-supported McMurdo Dry Valleys Long Term Ecological Research program (OPP-2224760). This data package has been released in the spirit of open scientific collaboration. Hence, Data Users are strongly encouraged to consider consultation, collaboration, and/or co-authorship (as appropriate) with the data package creator(s). Data Users should be aware these data may be actively used by others for ongoing research; thus, coordination may be necessary to prevent duplicate publication. Data Users should also recognize that misinterpretation of data may occur if they are used outside the context of the original study. Hence, Data Users are urged to contact the data package creator(s) if they have any questions regarding methodology or results. While substantial efforts are made to ensure the accuracy of this data package (with all its components), complete accuracy cannot be guaranteed. Periodic updates to this data package may occur, and it is the responsibility of Data Users to check for new versions. This data package is made available “as is” and comes with no warranty of accuracy or fitness for use. The creator(s) of this data package and the repository where these data were obtained shall not be liable for any damages resulting from misinterpretation, use, or misuse of these data. Finally, as a professional courtesy, we kindly request Data Users notify the primary contact referenced in the metadata when these data are used in the production of any derivative work or publication. Notification should include an explanation of how the data were used, along with a digital copy of the derived product(s). Thank you.

https://mcm.lternet.edu/content/huey-creek-streamflow-routing-and-subsurface-water-flow-2006 2006-01-09 Data published in DEIMS in 2016 McMurdo Dry Valleys LTER http://mcmlter.org/ McMurdo Dry Valleys LTER http://mcmlter.org/ McMurdo Dry Valleys LTER

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. 

Huey-Nut-C-Cycle-2006 Summary Huey-Nut-C-Cycle-2006 summary results data spreadsheet details. ResultsSummaryCalcs.csv 16407 1 1 \r\n column , https://mcm.lternet.edu/sites/default/files/data/ResultsSummaryCalcs.csv Time (hrs) Time (hrs) Time (hrs), the simulation time number real Q1 Q1 Q1 stream discharge in m3/hr at synoptic site location A. cubicMetersPerHour real Q2 Q2 Q2 stream discharge in m3/hr at synoptic site location B. cubicMetersPerHour real Q3 Q3 Q3 stream discharge in m3/hr at synoptic site location C cubicMetersPerHour real Q7 Q7 Q7 stream discharge in m3/hr at synoptic site location D cubicMetersPerHour real Q8 (gage) Q8 (gage) Q8 (gage) stream discharge in m3/hr at synoptic site location E, which corresponds to the gage cubicMetersPerHour real As 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) cubicMeter real Time (hrs) Time (hrs) Time (hrs) simulation time number real SWRADIN SWRADIN incoming solar radiation W/m2 real Q8 Q8 Q8 stream discharge in m3/hr at gage cubicMetersPerHour real Difference 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) cubicMeter real Observed Observed The discharge observed or measured in cubic meters per hour cubicMetersPerHour real error error error squared difference between the observed and simulated (Q8) gage discharge (m6/hr2) m6/hr2 real RMSE RMSE RMSE oot mean squared error, which is the square root of the mean error' value cubicMetersPerHour real kwr,g,qdiv storage kwr,g,qdiv storage cumulative stored water volume for each hour in m3 cubicMeter real storage change (%) storage change (%) percent change in storage volume between each subsequent time step dimensionless real Modeling input files huey streamflow-routing subsurface-flow The description of the modeling input files for the Huey Creek streamflow and subsurface flow balances study huey-streamflow-routing-subsurface-flow-modeling-input-files.zip 321538 application/zip https://mcm.lternet.edu/sites/default/files/data/huey-streamflow-routing-subsurface-flow-modeling-input-files.zip undefined