hydrology Communication Analytical Protocol to Estimate the Relative Importance of Environmental and Anthropogenic Factors in Influencing Runoff Quality in the Bumbu Watershed, Papua New Guinea Willie Doaemo 1,2 , Lawrence Wuest 3,*, Shaurya Bajaj 4, Wan Shafrina Wan Mohd Jaafar 5 and Midhun Mohan 4,6 1 Department of Civil Engineering, Papua New Guinea University of Technology, Lae 00411, Papua New Guinea;
[email protected] 2 Morobe Development Foundation, Doyle Street, Trish Avenue-Eriku, Lae 00411, Papua New Guinea 3 United Nations Volunteer, Stanley, NB E6B 2K5, Canada 4 United Nations Volunteer, Morobe Development Foundation, Lae 00411, Papua New Guinea;
[email protected] (S.B.);
[email protected] (M.M.) 5 Earth Observation Centre, Institute of Climate Change, National University of Malaysia (UKM), Bangi 43600, Selangor, Malaysia;
[email protected] 6 Department of Geography, University of California, Berkeley, CA 94720, USA * Correspondence:
[email protected] Received: 9 September 2020; Accepted: 12 October 2020; Published: 14 October 2020 Abstract: The wellbeing, socio-economic viability and the associated health of the inhabitant species of any ecosystem are largely dependent on the quality of its water resources. In this regard, we developed a protocol to measure the potential impact of various environmental and anthropogenic factors on runoff quality at 22 water sampling sites across the Bumbu Watershed in Papua New Guinea. For this purpose, we utilized Digital Elevation Models and several GIS techniques for delineation of stream drainage patterns, classification of the watershed based on Land Use/Land Cover, spatial interpolation of rainfall patterns and computation of the corresponding factor runoff.