| # | Entity | Status | State |
|---|---|---|---|
| 1 | 40 821 861 332 HYDROLOGICAL SERVICES PTY LIMITED STAFF RETIREMENT PLAN |
ABN Cancelled | NSW 2170 |
| 2 | 45 137 699 622 Island Hydrology Services Pty Ltd |
ABN Active | ACT 2605 |
| 3 | 72 962 765 873 HYDROLOGICAL SERVICES PTY LIMITED PROVIDENT FUND |
ABN Active | NSW 2170 |
| 4 | 50 283 516 589 PETER GORDON COOK HYDROLOGICAL RESEARCH SERVICES |
ABN Active | SA 5171 |
| 5 | 50 287 623 010 PETER FREDERICK CRAPPER HOLMES HYDROLOGICAL SERVICES |
ABN Active | ACT 2612 |
| 6 | 55 964 945 075 ANTHONY CHARLES FALKLAND AND MORNA MARGARET FALKLAND ISLAND HYDROLOGY SERVICES |
ABN Cancelled | ACT 2605 |
| 7 | 59 604 808 212 ROUHULAH FERDOWSIAN Ruhi Hydrological Services |
ABN Cancelled | WA 6330 |
| 8 | 84 463 195 900 MICHAEL STEFAN DURKAY LIQUID GOLD HYDROLOGY SERVICES |
ABN Active | SA 5125 |
| 9 | 84 463 195 900 MICHAEL STEFAN DURKAY LIQUID GOLD HYDROLOGY SERVICES |
ABN Active | SA 5125 |