2. 2
Non-point pollutants e.g. TP
Annual Total Phosphorus Load to Lake Erie. From Scavia et al. (2014).
Interim TP target
2011 Algal Bloom, Lake Erie, Western Basin
Cyanobacterial biomass for western Lake Erie based on measurement from satellite.
(Updated from Stumpf et al. 2012)
Problems
Nutrients challenges
3. 3
Conflict benefits
Robust research results needed
How to cooperate
Requires lots of efforts and investments
Cooperation between federal government, local
government, third parties, etc.
Subsidies
Efficiency
Lots of choices, most cost-benefit practices
Where and when to apply, e.g. critical source area
Problems
BMP management challenges
4. 4
Problems
Simulation challenges
Not user friendly
Hard to carry out scenario analysis
Outputs are in text file and hard to interpret on the map
Not designed for policy makers or farmers to use
Difficult to implement BMPs and test their impacts on/off site
Models are complex
Requires lots of background knowledge to use, e.g. soil science,
hydrology, etc.
9. 9
An open source GIS-based decision support system (DSS), named the Watershed
Evaluation of BMPs (WEBs) interface, was developed for creating BMP scenarios
and simulating economic costs and WQQ benefits at field and watershed scales
The DSS can examine prioritized BMP types/locations and corresponding economic
and environmental tradeoffs based on environmental targets and economic
constrains
Further improvements, such as system structure, database management, system
transfer and scale-up will be needed
Conclusions
& Future
Conclusions & future directions
WASCoB
www.wcswcd.org
Red clover
www.enerhealthbotanicals.com
Conservation tillage
www.climatetechwiki.org
10. 10
Acknowledgement
Watershed Evaluation Group @ UoG
Dr. Wanhong Yang
Dr. John Lindsay
Dr. Yongbo Liu
Dr. Zhiqiang Yu
Dr. Anatoliy M. Oginskyy
H.L. Hutt Building @ UoG
Funding and support
Canadian Water Network
Ausable Bayfield Conservation Authority
Publication
Shao, Hui, Wanhong Yang, John Lindsay, Yongbo Liu, Zhiqiang Yu, and Anatoliy Oginskyy, 2017.
An Open Source GIS-Based Decision Support System for Watershed Evaluation of Best
Management Practices. Journal of the American Water Resources Association (JAWRA) 1-11.
DOI: 10.1111/1752-1688.12521