| L.G.A. | Sampling Points | Latitude | Longitude |
| Ahoada West | 1 | 5˚3'14"N | 6˚37'59"E |
| 2 | 5˚4'17"N | 6˚40'32"E | |
| 3 | 5˚3'56"N | 6˚40'15"E | |
| 4 | 5˚5'44"N | 6˚40'28"E | |
| 5 | 5˚5'25"N | 6˚38'20"E | |
| Eleme | 6 | 5˚5'9"N | 6˚35'13"E |
| 7 | 5˚4'22"N | 6˚37'0"E | |
| 8 | 5˚5'53"N | 6˚37'8"E | |
| 9 | 5˚4'47"N | 6˚37'24"E | |
| 10 | 5˚4'31"N | 6˚38'45"E | |
| Emohua | 11 | 4˚56'24"N | 6˚52'11"E |
| 12 | 4˚56'5"N | 6˚51'41"E | |
| 13 | 4˚53'30"N | 6˚53'60"E | |
| 14 | 4˚54'18"N | 6˚51'55"E | |
| 15 | 4˚54'39"N | 6˚51'29"E | |
| Etche | 16 | 4˚60'50"N | 7˚3'52"E |
| 17 | 4˚58'12"N | 7˚3'10"E | |
| 18 | 4˚58'46"N | 7˚5'23"E | |
| 19 | 4˚58'35"N | 7˚3'37"E | |
| 20 | 4˚59'2"N | 7˚7'16"E | |
| Ikwere | 21 | 5˚4'7"N | 6˚57'4"E |
| 22 | 5˚1'60"N | 6˚53'40"E | |
| 23 | 5˚3'51"N | 6˚55'47"E | |
| 24 | 5˚4'15"N | 6˚55'26"E | |
| 25 | 5˚4'33"N | 6˚56'54"E | |
| Ogba-Egbema | 26 | 5˚23'37"N | 6˚39'42"E |
| 27 | 5˚22'10"N | 6˚37'18"E | |
| 28 | 5˚20'58"N | 6˚37'31"E | |
| 29 | 5˚20'8"N | 6˚37'24"E | |
| 30 | 5˚20'26"N | 6˚39'0"E | |
| Oyigbo | 31 | 4˚50'3"N | 7˚7'56"E |
| 32 | 4˚52'34"N | 7˚8'19"E | |
| 33 | 4˚52'13"N | 7˚6'44"E | |
| 34 | 4˚53'23"N | 7˚8'30"E | |
| 35 | 4˚53'57"N | 7˚8'6"E |