Total Nitrogen (mg/L) as ND2 & ND3 Total Nitrogen (mg/L) as ND2 & N03 
An Ecological Assessment of the Louisiana Tensas River Basin Chapter 4 
Sample Collection Date 
STATION • • • 07369500 • • • 58010066 
Figure 4.3 Total nitrogen concentrations for two water quality monitoring stations in Tendal, La. 
3.0 
2.5 
2.0 
1.5 
1.0 
0.5 
0.0 
02/12/90 11/08/92 08/05/95 05/01/98 
Sample Collection Date 
STATION • • • 58010331 
Figure 4.4. Total nitrogen concentrations for Winnsboro, La. 
