Development and Testing of a
TexasBest Management Practice Evaluation Tool to Aid Decision-Making in Conservation
Planning on Agricultural Lands
Development of a SWAT based conservation planning tool to allow the effects
of conservation measures to be evaluated prior to implementation.
This tool will predict sediment phosphorus nitrogen and bacteria losses
from both cultivated and pasture fields under a wide variety of management
and conservation measures.
The SWAT model was used to assess the effects of urbanization and other
land use changes on sediment and nutrient delivery to reservoirs in the TrinityRiver Basin.
Evaluation of Management Scenarios on Nutrient loads in the Illinois River
Development and Validation of a Quantitative Phosphorus Loss Assessment
Development and validation of an easy to use SWAT model interface to allow
conservation planners to evaluate the effects of field management on phosphorus
and sediment loss from individual fields.
Validated across the southern US with 283 field years of measured data
with emphasis on animal manures.
Applicable to the State of Oklahomaonly.
Modeling the LakeEuchaBasinwith SWAT 2000 in support of litigation.
This work was commissioned by the City of Tulsato determine the effect of poultry manure applications in the LakeEuchaBasin, of one of the city's water supply reservoirs. Model predictions were
used by the City of Tulsain Federal Court against several poultry integrators. The case was settled
out of court shortly after SWAT simulations were deemed admissible in a
Development of a Quantitative Phosphorus Index for Pastures in the EuchaBasin
The Pasture Phosphorus Management (PPM) Calculator is an vastly simplified
interface for the SWAT 2000 model. It was developed at OklahomaStateUniversityto develop conservation and nutrient management plans in the LakeEuchaBasin. PPM Calculator puts the predictive power of a cutting edge hydrologic
model in the hands of even a novice computer user.
Evaluation of Management Practices and Examination of Spatial Detail Effects
Using the SWAT Model (MS Thesis)
An examination of how differing data sources effect the results of a hydrologic
model, with comparisons specifically aimed at the BASINS 3.0 dataset. (
Modeling Sediment and Nutrients in the CobbCreekBasin
The SWAT model was used in conjunction with the WEPP Roads model to target
critical sediment source areas in the basin. This information was used
to target fields for enrolment into conservation programs with limited
resources. This are was modeled in a subsequent effort to support the first
TMDL in Oklahomain a nonpoint source dominated watershed.
FortCobbBasin- Modeling and Land Cover Classification, February 2003 (
Modeling Non-PointSourceComponent For the Fort Cobb TMDL, August 8, 2003 (Report)
Modeling Decision Support System Scenarios in the EuchaBasinUsing SWAT 2000
A SWAT model for the lakeEuchaBasinwas developed using several novel datasets and methods to support a webbased
Decision Support System.
These data included multi image Landsat data, georeferenced soil test
data and extensive conservation and nutrient management plan data from
farms in the basin.
The model was calibrated via custom software using a Complex Shuffled
Evolution Algorithm on a 50GHZ computer cluster.
Decision Support System
Targeting High Phosphorus Loss Areas in the SpavinawCreekBasin
The SWAT model was applied to a very high resolution data set (4 meters)
to predict how phosphorus loads varies across the SpavinawCreekBasin. These data were used to identify areas which contribute a disproportionate
amounts of phosphorus per unit area.
Modeling In-stream Nutrient Concentrations in the Illinois River
Oklahomahas a new 0.037mg/l total phosphorus limit for scenic rivers. A new in-stream
phosphorus model was used with SWAT to predict what reductions in point
sources and poultry manure application are required to meet the 0.037 mg/l
criterion. The in-stream mode was incorporated in to the SWAT model
and is currently under testing.
December 2006 Report
Project Update 2009 Not yet available
Modeling Critical Sediment Source Areas in the StillwaterCreekBasin
The Methodology developed in the Cobb Creek Project was applied to the StillwaterCreekBasin. Again the goal was to target critical sediment source areas in the basin.
Evaluating the Effect of Best Management Practices in the GreatSaltPlainsBasin.
SWAT was used to estimate the impact of various best management practices
(BMPs) on sediment and nutrient loads. SWAT was also used to predict the
spatial and temporal characteristics nutrient and sediment loads.
Hydrologic Modeling of the GreatSaltPlainsBasin, September 2001 (
Evaluating Conservation Practices Effectiveness at the Basin Scale using
Remote Sensing and Hydrologic Models
The objective of this research was to evaluate the impact of conservation
practices subsidized by the Oklahoma Conservation Commission on phosphorus
and sediment loads in the LakeWisterBasinusing a combination of remotes sensing and model simulations.
Illinois RiverRiparian Targeting
This research prioritized the establishment of riparian buffers in the Illinois River(OK/AR).
A combination of remote sensing, measured migration and stream curvature
were used to rank potential sites for buffer establishment.
Report not yet released (2008)
Station Derived Precipitation
Inclusion of NEXRAD data into hydrologic models and weather interpolation
Targeting HighNon-PointSource Contributing Areas in the TurkeyCreekBasin
The SWAT model was applied to a high resolution data set (10 meter) to
predict how sediment and phosphorus loads vary across the TurkeyCreekBasin. These data were used to identify areas which contribute disproportionate
amounts of sediment and phosphorus per unit area.
Differing satellite sensors were compared for cost effective targeting
in riparian areas.
Bio-fuel Crop Yield Simulation
Potential yields for sweet sorghum and switchgrass were simulated across
the State of Oklahoma.
The state was broken into 9 climate zones based on annual rainfall and
soils information was included at a resolution of 200 meters.
Both dryland and irrigated simulation were included.
Protocol to Determine the Optimal Placement of Riparian/Buffer Strips
The primary objective of this project was to develop a methodology to
identify the optimal placement of riparian buffer strips in a watershed
and to test that method in the Spavinaw Creek watershed in northeast Oklahoma.
A combination of model and GIS based metrics were used.