 
Research papers
- Hall G. and Cratchley R., 2005.
 Modelling frontal and convective rainfall distributions over North Wales. Proceedings of the 2005 WRF/MM5 User's Workshop, National Centre for Atmospheric Research, Boulder, Colorado.
 
- Hall G. and Cratchley R., 2005.
 The role of forestry in flood management in a Welsh upland catchment. Proceedings of the 45th Congress of the European Regional Science Association, Amsterdam.
 
- Hall G. and Cratchley R., 2006.
 Sediment erosion, transport and sedimentation during the July 2001 Mawddach extreme flood event.  In: Sediment Dynamics and the Hydromorphology of Fluvial Systems. IAHS publication 306.
 
- Hall G. and Cratchley R., 2006.
 Coupling of MODFLOW with the MM5 mesoscale meteorological model for real-time input of high resolution rainfall events in a mountainous area.  In: Managing Groundwater Systems. International Groundwater Modelling Center, Colorado.
 
- Hall G. and Cratchley R., 2006.
 A hydrological study of Waen y Griafolen blanket bog, North Wales.  Proc. International Conf. on Hydro-ecology. Carlsbad, Czech Republic.
 
- Hall G. and Cratchley R., 2006.
 Hydrological Modelling of Flood Events around the Mawddach Estuary, North Wales. Proc. 2nd International Conf. on Estuaries and Coasts, Guangzhou, China.
 
- Hall G. and Cratchley R., 2007.
 Mechanisms of flooding in the Mawddach catchment.  In: Hydrology and Management of Water Resources in Celtic Countries. IAHS publication 310
 
- Hall G., Cratchley R. and Johnson S., 2006.
 The use of SAGA-GIS in an integrated meteorological/hydrological model for the Mawddach river catchment, North Wales.  Gottinger Geographische Abhandlungen, 115.
 
- Hall G., Cratchley R. and Johnson S., 2006. 
 Integrated meteorological/hydrological modelling of the Mawddach river catchment, North Wales.   Proc. British Applied Mathematics Colloquium, Keele.
 
- Hall G., 2011. 
 Flooding in Dolgellau, Saturday 15 January 2011.
 
- Hall G., 2012.
 Seeder-feeder enhanced rainfall over the mountains of North Wales. American Meteorological Society 92nd Annual Meeting, January 2012.
 
- Hall G. and Cratchley R., 2015.
 Flood forecasting for the Mawddach catchment, North Wales. Proc. 3rd IMA International Conference on Flood Risk, Swansea.
 
- Hall G., 2021.
 Protection of Fairbourne village from flooding. Arthog Community Council report.
 
- Hall G., 2022.
 Investigating Fairbourne flood protection. Arthog Community Council report.