Table 2.20  Iron (mg/l) at the Lower Cape Fear River Program stations for the 2000-2001 monitoring period.  The North Carolina state standard for iron in freshwater is 1000 mg/l.  There is no standard for salt water.

DWQ# 72 73 86 87     88 89 90 91    
month NAV HB M61 M54 M42 M35 M23 M18    
JUN 1,150 815 550 665 350 375 275 265    
JUL 1,380 590 590 870 750 515 325 350    
AUG 1,230 1,030 790 1,150 940 695 325 290    
SEP 1,200 1,150 950 900 800 675 350 345    
OCT 2,750 1,250 1,150 1,430 890 515 375 310    
NOV 1,000 725 465 465 425 340 300 340    
DEC 790 950 650 500 700 490 725 420    
JAN 1,530 815 425 750 465 475 490 535    
FEB 1,060 1,240 775 875 875 865 625 1,050    
MAR 1,450 1,150 2,190 1,200 925 690 650 2,280    
APR 3,750 1,240 1,880 1,450 1,430 1,690 1,040 885    
MAY 1,150 840 470 705 345 490 510 720    
JUN 775 900 665 750 475 250 250 250    
mean 1,478 977 888 901 721 620 480 618    
std dev 809 209 530 307 297 348 220 538    
max 3,750 1,250 2,190 1,450 1,430 1,690 1,040 2,280    
min 775 590 425 465 345 250 250 250    
                     
                     
DWQ# 59 61 92 71 84   DWQ# 79 80 83
month NC11 AC DP IC NCF117   month SAR LRC BC117
JUN 1,000 975 1,000 1,250 1,000   JUN 1,000 1,100 1,000
JUL 725 650 900 1,240 640   JUL 1,300 640 375
AUG 1,150 1,020 1,040 1,250 1,060   AUG 1,440 2,490 1,060
SEP 1,350 1,250 1,300 1,400 1,100   SEP 1,500 1,650 1,400
OCT 950 1,030 1,130 1,380 1,250   OCT 1,280 775 950
NOV 465 615 725 865 820   NOV 750 590 615
DEC 550 565 615 615 560   DEC 400 650 500
JAN 525 565 590 590 475   JAN 245 465 765
FEB 665 550 675 775 565   FEB 650 965 1,040
MAR 1,730 1,400 1,480 1,160 615   MAR 890 1,850 1,000
APR 3,750 4,000 3,380 2,880 545   APR 565 1,040 870
MAY 1,020 995 520 1,280 935   MAY 1,120 1,180 660
JUN 1,300 1,030 875 750 675   JUN 900 1,800 825
mean 1,168 1,095 1,127 1,187 788   mean 926 1,169 851
std dev 826 715 871 563 244   std dev 380 584 261
max 3,750 3,380 4,000 2,880 1,250   max 1,500 2,490 1,400
min 465 520 550 590 475   min 245 465 375