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Table 1 Water quality index (WQI) values, number of sampling locations, pollution sources, and parameter rating for Third Fork Creek Watershed between 2010 and 2020

From: Growth and chemotaxis of nematodes reduced upon exposure to Third Fork Creek surface water

Watershed Year Average WQI Number of sampling locations Pollution sources Bacteria Nutrients Turbidity Aquatic Life References
Third Fork Creek 2010 71 7 Cooking grease and food oil
Erosion and sedimentation
Improper disposal of yard waste illicit mobile car washing
Private sewer overflow
Public sanitary sewer over flow
Sanitary sewer line breaks
Poor Good Poor City of Durham Stormwater and GIS Services [38]
Third Fork Creek 2012 73 7 Cooking grease and food oil
Erosion and sedimentation
Improper disposal of yard waste
Illicit mobile car washing
Private sewer overflow
Public sanitary sewer over flow
Sanitary sewer line breaks
Poor Good City of Durham Stormwater and GIS Services [6]
Third Fork Creek 2014 71 City of Durham Stormwater and GIS Services [8]
Third Fork Creek 2016 76 7 Cooking grease
Erosion and sedimentation
Illicit mobile car washing
Improper disposal of yard waste
Paint spills
Petroleum spills
Private sewer overflow
Public sanitary sewer over flow
Sanitary sewer line breaks
Poor Fair Fair Poor City of Durham Stormwater and GIS Services [8]
Third Fork Creek 2018 66 7 Cooking grease
Erosion and sedimentation
Petroleum spills
Private sewer overflow
Public sanitary sewer over flow
Poor Fair Fair Poor City of Durham Stormwater and GIS Services [10]
Third Fork Creek 2020 75 7 Poor Fair Good Poor City of Durham Stormwater and GIS Services [13]