| Salinity tolerance of the eggs and larvae of the Australian grayling, Prototroctes maraena Gunther (Salmoniformes: Prototroctidae) GJ Bacher, TA O'Brien Australian Journal of Marine & Freshwater Research 40 (2), 227-230, 1989 | 31 | 1989 |
| Thermal rehabilitation of the southern Murray-Darling Basin T Ryan, R Lennie, J Lyon, TO Brien Final Report to Agriculture, Forestry, Fisheries Australia. MD, 2001 | 19 | 2001 |
| The sensitivity of Australian freshwater aquatic organisms to heavy metals SRS 88/018 GJ Bacher, TA O'Brien Environmental Protection Authority, Melbourne, Australia, 1990 | 17* | 1990 |
| Too close for comfort: A fishway exit and a hydro-power station inlet GP Stuart, I.G., Koehn, J.D., O'Brien, T.A., McKenzie Marine and Freshwater Research 61 (1), 23-33, 2010 | 15 | 2010 |
| Review of fishways in Victoria 1996–2009 T O’Brien, T Ryan, I Stuart, S Saddlier Arthur Rylah Institute for Environmental Research Technical Report Series, 2010 | 12 | 2010 |
| Survival and movements of koalas translocated from an over-abundant population P Menkhorst, D Ramsey, T O’Brien, E Hynes, D Whisson Wildlife Research 46 (7), 557-565, 2019 | 10 | 2019 |
| Instream barriers of the Loddon and Campaspe catchments: Assessment and prioritisation for fish passage T O'Brien, M Mallen-Cooper, K Pitman Arthur Rylah Institute for Environmental Research, Department of …, 2006 | 10 | 2006 |
| Assessment of the impact of saline drainage on key fish species T O'Brien Riverine Environment Research Forum. RJ Banens, R Lahane (Eds), 43-46, 1995 | 10 | 1995 |
| Thermal rehabilitation of the southern Murray–Darling Basin, Final Report to Agriculture, Forestry, Fisheries Australia, MD 2001 FishRehab Program T Ryan, R Lennie, J Lyon, T O’Brien Department of Sustainability and Environment, Victoria, 2003 | 9 | 2003 |
| Fish migration at Tauwitchere barrage: new options for fish passage I Stuart, Q Ye, J Higham, T O’Brien Murray Darling Basin Commission. Arthur Rylah Institute, Heidelberg, 2005 | 8 | 2005 |
| Aquatic fauna of the Woorinen Lakes: survey and recommendations for management J Lyon, T Ryan, P Papas, D Tonkinson, TO Brien, R Lennie Report for Goulburn-Murray Water. Department of Natural Resources and …, 2002 | 8 | 2002 |
| Overcoming physical barriers to fish migration T O’Brien Australian Society for Fish Biology Workshop Proceedings, Bendigo, Victoria …, 1999 | 8 | 1999 |
| Providing for fish passage at small instream structures T O'Brien, S Perera, B Lewis Water 99: Joint Congress; 25th Hydrology & Water Resources Symposium, 2nd …, 1999 | 5 | 1999 |
| Rock fishways in Victoria TA O’Brien Second National Fishway Technical Workshop, Rockhampton, AP Berghuis, PE …, 1997 | 5 | 1997 |
| Impact of Saline Drainage on Key Murray-Darling Basin Fish Species TA O'Brien, TJ Ryan Freshwater Ecology Division, Arthur Rylah Institute for Environmental Research, 1997 | 5 | 1997 |
| Instream barrier assessment and prioritisation of the Lower Barwon River and Otways streams T Ryan, I Stuart, T O’Brien, S Saddlier Report for the Corangamite Catchment Management Authority. vgls. vic. gov …, 2010 | 4 | 2010 |
| Fishways – An element of stream rehabilitation: some issues, recent successes, and research needs LJ White, TA O’Brien Proceedings of the 2nd Australian Stream Management Conference 2, 691-695, 1999 | 3* | 1999 |
| Evaluating revegetation outcomes through community based monitoring S Jellinek, TA O'Brien, A Bennett La Trobe, 2021 | 2 | 2021 |
| Problem of Salinity and its Control, River Murray, Australia TA O'Brien | 2 | 1983 |
| Providing for Fish Passage at Small Instream Structures B Lewis, T O'Brien 6th Conference on Hydraulics in Civil Engineering: The State of Hydraulics, 2001 | 1 | 2001 |
