Monitoring Water Quality Using ArcView GIS Lindsay Chischilly Mentor: Dr. Don Huggins Will Spotts Jeff Anderson Kansas Biological Survey Haskell Indian Nations University Overview
Nonpoint Source Pollution Water Quality Research Methods Geographic Information Systems Results of Monitoring Program Definition of Terms Nonpoint Source Pollution (NPSP)- the broad range of pollution with no specific point of origin. Sources of NPSP include agriculture, industries, and mining.
NPSP is weather dependent and not yet subject to federal regulations. Definition of Terms (continued) Point Source Pollution-point sources generally enter receiving water bodies at some identifiable site(s) and carry pollutants whose generation is controlled by some internal process or activity, rather than weather.
Clean Water Farms Project 33 farms in eastern Kansas were given federal grant money to address local water quality management issues. 8 farms are monitored by the Kansas Biological Survey. Purpose of CWFP Monitoring Program
Detect changes in NPSP at the field level. Relate changes in nutrient and herbicide concentrations to changes in land management. Participating Farms Methods Sampling Devices Lysimeter
Automatic Runoff Sampler Geographic Information Systems Methods (continued) Lysimeters-uses a vacuum and then pressure to collect groundwater at depths of one, four, and eight feet. The
eight foot tube are the most reliable samplers. Methods (continued) Automatic Runoff Sampler-used to collect eight samples of surface runoff over the first three
hours of a storm. GIS Overview Computer system capable of holding and using data to describe places on the earths surface. Manipulate, analyze, store, and display spatial data. Links data to geographic locations
Monitoring Water Quality Using GIS Monitoring Water Quality Using GIS Monitoring Water Quality Using GIS Monitoring Water Quality
Using GIS Monitoring Water Quality Using GIS Results Total Phosphorous in Groundwater at Eight Feet Three Locations on Farm 0ne: 1996-2000 Total Phosphorous (ug/L)
1000 Cluster 3 1 2 100 10
1 0 1 2 3
4 5 6 7 8
9 10 11 Sampling Event Total Nitrogen in Groundwater at Eight Feet Three Locations on Farm 0ne: 1996-2000 Total Nitrogen (mg/L) 100
Cluster 3 1 2 10 1
.1 0 1 2 3
4 5 6 7 8
9 10 11 Sampling Event Mean Total Phosphorous in Agricultural Surface Runoff Farm One: 1996-2000 Total Phosphorous (ug/L) 10000
Sampler 14 17 1000 100 10
0 1 2 3 4 5 6 7 8 9 10111213141516171819 Sampling Event Mean Total Nitrogen in Agricultural Surface Runoff Farm One: 1996-2000 Total Nitrogen (mg/L) 100
Sampler 14 17 10 1 .1
0 1 2 3 4 5 6 7 8 9 10111213141516171819 Sampling Event Sources of Variation Seasonal Land Management Tilling and Planting Herbicide Application Compost Spreading Crop Rotation
Rainfall Event Frequency, Intensity and Duration Conclusions GIS is a creative tool to help visualize and analyze the issues affecting water quality. There are many contributing factors in the overall water quality in agricultural landscapes. Groundwater concentrations of TP are more variable than TN over space and time.
Need more time to identify and quantify the specific effects of land management on agricultural water quality.
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