Eutrophication water-quality models and supporting water-quality and phosphorus load data used to simulate changes in the
water quality of the Winnebago Pool Lakes, Wisconsin, in response to change in phosphorus loading
Dataset Identification:
Resource Abstract:
Three eutrophication models (mass balance, BATHUB, and Jensen models) were developed and calibrated for the Winnebago Pools,
Wisconsin. These models were used to quantify the input of phosphorus from the sediments of the lakes, and determine how the
water quality (total phosphorus concentration, chlorophyll a concentrations, and Secchi depth) should respond to changes in
phosphorus loading from the watershed. Each of the models were developed using flow and phosphorus inputs from internal and
external sources. This data release is subdivided into 4 parts: 1) Lake Winnebago water-quality data; 2) Mass balance of water
and phosphorus for Lake Winnebago, with estimated internal loading of phosphorus estimates; 3) BATHTUB model inputs and outputs
; and 4) Jensen model inputs and outputs.<br> <br> <strong>Winnebago Water quality Data</strong> <ol> <li>Winnebago_data.csv
This file has water-quality data (primarily nutrient, chlorophyll, and Secchi) collected in Lake Winnebago separated into
3 sections: north, center, and south.</li> </ol> <strong>Mass Balance Model</strong> <ol> <li>Winnebago_Mass_Balance.csv This
file has all of the daily inputs of water and phosphorus to construct water and phosphorus budgets for Lake Winnebago. Changes
in the water volume are used to verify the accuracy of the water mass balance. Changes in the phosphorus mass are used to
estimate daily total phosphorus concentrations in the lake.</li> <li>MassBalanceVerification.csv. This file has total phosphorus
concentrations measured in the lake or at the outlet to compare with those estimated using the mass balance approach.</li>
</ol> <strong>BATHTUB Model</strong><br> The analysis were performed in BATHTUB, as described in:<br> Walker, W.W., Jr., 1996,
Simplified procedures for eutrophication assessment and prediction User manual:<br> U.S. Army Corps of Engineers, Waterways
Experiment Station, Instruction Report W-96-2, [variously paged]. <br> [Also available at http://www.dtic.mil/dtic/tr/fulltext/u2/a286912.pdf.]
<ol> <li>Scenario_Description.csv This file has a description of each of the scenarios simulated with BATHTUB.</li> <li>Flow_Method_Description.csv
This file has a description of how the flow was estimated for each source.</li> <li>Phosphorus_Concentration_Method_Description.csv
This file has a description of how phosphorus concentrations were estimated for each source.</li> <li>Model_Selections.csv
This file summarizes all of the the models used in this application of BATHTUB. These are selected in Model Sections.</li>
<li>Global Variables.csv This file has all of the inputs for precipitation and evaporation used in the models.</li> <li>Segments_PreCalibration.csv
This file has all of the inputs for the morphometry, observed water quality, calibration factors, and internal loading for
the lake. These values were used prior to calibration.</li> <li>Segments_PostCalibration.csv This file has all of the inputs
for the morphometry, observed water quality, calibration factors, and internal loading for the lake. These calibration values
were used for all scenarios. Note: internal loading has to be changed for each scenario.</li> <li>Internal_Loading_By_Scenario.csv
This file has all of the internal loading rates that need to be entered into Segments for each Scenario.</li> <li>Tributary.csv
This file has total phosphorus concentrations for each of the phosphorus sources. These values change for each scenario and
need to be entered into the model for each scenario.</li> <li>All of the information in Model_Selections.csv, Global Variables.csv,
Segments.csv, Internal_Loading_By_Scenario.csv, and Tributary.csv are input into BATHTUB and all of the output is in BATHTUB_Output.csv</li>
<li>BATHTUB_Output.csv This file contains all of the output from the BATHTUB model for each lake for each scenario.
All of the data represent average June through September water quality.</li> </ol> <strong>Jensen Model</strong><br> The analyses
were performed in the Jensen Model incorporated into an Excel2016 worksheet. The algorithms included in this worksheet are
described in:<br> Jensen, J.P., Pedersen, A.R., Jeppesen. E., and Sndergaard, M., 2006. An empirical model describing <br>
the seasonal dynamics of phosphorus in 16 shallow eutrophic lakes after external loading reduction: <br> Limnology and
Oceanography, v. 51, p. 791-800. DOI: 10.4319/lo.2006.51.1_part_2.0791 <ol> <li>JensenCalibration_Inputs.csv This file contains
the daily data (water temperature, and phosphorus loading) required to run the Jensen model for 2008 through 2013 (the calibration
period) for both the Upper Pool Lakes and Lake Winnebago.</li> <li>JensenCalibration_Outputs.csv This file contains the daily
output from the model (total phosphorus concentration, phosphorus in the sediments, phosphorus sedimentation, and sediment
phosphorus release) and for the Upper Pool Lakes and Lake Winnebago. This file also contains the in-lake phosphorus concentration
data for which the models were calibrated.</li> <li>JensenBase_Inputs.csv This file contains the daily data (water temperature,
and phosphorus loading) required to run the Jensen model for 2008 through 2013 (base period) for both the Upper Pool Lakes
and Lake Winnebago. The flow and phosphorus inputs were based primarily on SWAT output (The Cadmus Group, 2018).</li> <li>JensenScenario_Inputs.csv
- This file contains the daily data (water temperature, and phosphorus loading) required to run the Jensen model for 2013
through 2018 for both the Upper Pool Lakes and Lake Winnebago for each of the scenarios. The flow and adjusted phosphorus
inputs were based primarily on SWAT output (The Cadmus Group, 2018). The five year flows and adjust phosphorus loads are repeated
over and over again in the model to simulate the changes in loading for each scenario.</li> <li>Jensen_Scenario_Outputs.csv
This file contains the daily total phosphorus concentrations from 2008 through 2145 for the Upper Pool Lakes and Lake Winnebago
for each scenario. It also contains daily sediment phosphorus content for the 75 percent reduction scenario.</li> <li>Jensen_Scenario_Output_Summary.csv
This file contains a summary data (average and geometric mean total phosphorus concentrations) from the Jensen model for Upper
Pool Lakes and Lake Winnebago for each 5 year period from 2009-2013 to 2139-2143.</li> </ol> <br>
Citation
Title Eutrophication water-quality models and supporting water-quality and phosphorus load data used to simulate changes in the
water quality of the Winnebago Pool Lakes, Wisconsin, in response to change in phosphorus loading
other Citation Details
Cinergi keyword enhanced.File generated at Wed Dec 05 04:32:08 UTC 2018
purpose:
The models were created to determine how much phosphorus input from the watershed to the Winnebago Pool Lakes has to be reduced
in order for phosphorus concentrations in all four of the Pool Lakes to decline to concentrations below the 0.04 mg/L Wisconsin
phosphorus criterion established for the lakes.