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

Dates

Publication Date: 2018-08-22
Start Date: 1976
End Date: 2015

Citation

Robertson, D.M., and Kennedy, J.L., 2018, 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: U.S. Geological Survey data release, https://doi.org/10.5066/P9Y8BE4H.

Summary

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 [...]

Summary

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.

Winnebago Water quality Data

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.

Mass Balance Model

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.
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.

BATHTUB Model
The analysis were performed in BATHTUB, as described in:
Walker, W.W., Jr., 1996, Simplified procedures for eutrophication assessment and prediction User manual:
U.S. Army Corps of Engineers, Waterways Experiment Station, Instruction Report W-96-2, [variously paged].
[Also available at http://www.dtic.mil/dtic/tr/fulltext/u2/a286912.pdf.]

Scenario_Description.csv – This file has a description of each of the scenarios simulated with BATHTUB.
Flow_Method_Description.csv – This file has a description of how the flow was estimated for each source.
Phosphorus_Concentration_Method_Description.csv – This file has a description of how phosphorus concentrations were estimated for each source.
Model_Selections.csv – This file summarizes all of the the models used in this application of BATHTUB. These are selected in Model Sections.
Global Variables.csv – This file has all of the inputs for precipitation and evaporation used in the models.
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.
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.
Internal_Loading_By_Scenario.csv – This file has all of the internal loading rates that need to be entered into Segments for each Scenario.
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.
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
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.

Jensen Model
The analyses were performed in the Jensen Model incorporated into an Excel2016 worksheet. The algorithms included in this worksheet are described in:
Jensen, J.P., Pedersen, A.R., Jeppesen. E., and Søndergaard, M., 2006. An empirical model describing
the seasonal dynamics of phosphorus in 16 shallow eutrophic lakes after external loading reduction:
Limnology and Oceanography, v. 51, p. 791-800. DOI: 10.4319/lo.2006.51.1_part_2.0791

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.
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.
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).
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.
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.
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.

Contacts

Point of Contact :: Dale M Robertson
Originator :: Dale M Robertson, James L Kennedy
Metadata Contact :: Dale M Robertson
Publisher :: U.S. Geological Survey
Distributor :: U.S. Geological Survey - ScienceBase
SDC Data Owner :: Upper Midwest Water Science Center
USGS Mission Area :: Water Resources

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Eutrophication_water-quality_models.xml “Metadata” Original FGDC Metadata	View	7.05 KB	application/fgdc+xml
figure2.jpg		4.58 MB	image/jpeg
Water_Quality_Data_CSV.zip		15.56 KB	application/zip
Mass_Balance_CSV.zip		203.64 KB	application/zip
Bathtub_CSV.zip		15.19 KB	application/zip
Jensen_CSV.zip		1.85 MB	application/zip

Related External Resources

Type: Related Primary Publication

Robertson, D.M., Siebers, B.J., Diebel, M.W., and Somor, A.J., 2018, Water-quality response to changes in phosphorus loading of the Winnebago Pool Lakes, Wisconsin, with special emphasis on the effects of internal loading in a chain of shallow lakes: U.S. Geological Survey Scientific Investigations Report 2018–5099, 58 p., https://doi.org/10.3133/sir20185099.	https://doi.org/10.3133/sir20185099

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.

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

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