Showing papers on "River engineering published in 1986"
TL;DR: In this article, three deterministic and two stochastic methods of synthesis of conceptual parameters were studied, and the results offer aid in identifying conceptual parameters when modelling systems for which no historical time series of inflow-outflow data are available (e.g. ungauged rivers or river engineering design).
Abstract: Alternative ways of developing relationships between the parameters of conceptual hydrological flood routing models and the physics (understood as the hydrodynamic model or as the real system) have been examined. Three deterministic and two stochastic methods of synthesis of conceptual parameters were studied. The results offer aid in identification of conceptual parameters when modelling systems for which no historical time series of inflow-outflow data are available (e.g. ungauged rivers or river engineering design).
12 citations
01 Jan 1986
TL;DR: In this paper, the Butibum River basin management concept and river engineering works are proposed to prevent future disasters and also provide positive economic, social and land gain benefits to the river environs and the community.
Abstract: Following severe flooding of the Butibum River near Lae, Papua New Guinea, on 24th September 1983, which caused widespread property damage, loss of life, and rendered thousands of people temporarily homeless, extensive investigations were undertaken to try to avoid any recurrence of similar disasters. The 1983 flood discharge was estimated to be 830 m3/sec equivalent to a 1 in 50 year return period flood. Lae, which is bisected by the Butibum River, is the second largest city in PNG with a population in excess of 70,000 which is expected to increase to over 130,000 within the next 15-20 years. The river has a total catchment area of 110 km2 extending 20 km inland into the Atzera Ranges. As the engineering investigations and other related regime design aspects progressed a change in emphasis was found to be necessary. Since 1942 the river has eroded its banks and wandered in a relatively random manner. Therefore non-structural measures (planning regulations) together with financial and social constraints were combined with engineering measures. The investigations concluded that it is possible to establish a river basin management concept and river engineering works which will not only prevent future disasters but also provide positive economic, social and land gain benefits to the river environs and the community. Some key elements of the recommended scheme are being implemented at the present time.
1 citations