Colorado State University - Fort Collins

Abstract: This paper assesses affordability and willingness of rural households in the Lowveld region of Swaziland to install rooftop rainwater harvesting systems. The choice of the Lowveld was motivated by the fact that it is prone to drought and experiences acute water shortage problems during the dry season from May to October. Therefore, this study was designed to determine affordability and willingness on the part of households to install a rainwater harvesting system consisting of gutter...

ABSTRACT A study to assess the effect of rainfall variability, varying water demand and storages sizes on the duration of the collected rainwater for domestic purposes in the drought prone areas of Swaziland was conducted in the Lowveld region. The choice of the Lowveld was motivated by the fact that it is prone to drought and experiences acute water shortage problems. The objectives of the study were to determine the: (i) effect of rainfall variability on the annual amount of rainwater to be c...

ABSTRACT Water plays a fundamental, pervasive , critical role in every economy and thus is very important in almost all aspects of the human endeavours. It is worth to remember that, ancient civilization grew up in the river valleys such as Euphratis and Tigris, the Nile river etc. In Egypt, the waters of the Nile is their life blood and the Tukano of the Amazon compare water on the earth to the blood in their veins. Forty seven percent of the land area of the earth is drained by international ...

Abstract Air, land and water are the three fragile components of the Spaceship Earth. These three components are highly integrative resources and therefore, must be properly planned and managed in order to ensure adequate public health, food supplies and transportation. The quality of life is directly dependent on how well these resources are planned and managed for sustainable development. The above three resources are highly integrated and thus the need for multi-purpose water resources plann...

ABSTRACT: Urbanization and expansion of structural developments within the urban area of Mbabane are challenges that require a rapid response in terms of flood-damage mitigation measures. There have been several cases of flash floods in Mbabane mostly resulting from heavy downpour and a poor drainage system, thus causing in loss of property and goods. In this study, the effects of development activities on the occurrence of floods in Mbabane City were investigated using two set of orthophoto, m...

The Zambezi river basin drains 8 riparian countries: Angola, Namibia, Zambia, Botswana, Zimbambe, Malawi, Tanzania and Mozambique. The Zambezi river is therefore, an international river basin. It drains an area of about 1,800,00 square km(Okavango Chobe system included).The surface water resources of the Zambezi river basin was assessed on the basis of average typical dry and wet year flow conditions. An overview of the water resources of the Zambezi river basin (surface water only) during the d...

Abstract It has been established that climate change in the next 100 years will be due to anthropogenic greenhouse gas emissions. The major effect of the increase of greenhouse gas emissions in the atmosphere is global warming and thus changes in temperature, precipitation and the environment (IPCC, [1]). A calibrated WatBal model was used in assessing the vulnerability of the surface water resources in Swaziland due to climate change. Two scenarios (dry and wet year) were considered given clim...

PROJECT FINANCIAL ANALYSIS Here we are dealing with investment issues and the components of a project financial analysis are:  Project initial costs  Operation and maintenance costs project  Returns/benefits from the project  Methods of project financial analysis are as follows: o Annual cash flow method  Incremental cash flow  Uniform annual cash flow  Minimum attractive rate of return o Break even analysis  Sensitivity analysis  Expected value  Learni...

Relevant probability statistics, exceedance probability, expectation operator, relevant statistical concepts, extreme events, statistical distribution functions: + The Gumbel distribtion + Log-Pearson type III distribution Relationship between return period and the design flood. Design frequency and safety, Comparison of flood frequency and Design rainfall approaches.

Globally water is unevenly distributed in time and space. In Swaziland the highveld region receives high rainfall ranging from 1200 to 1500mm annually while the lowveld region receives the lowest amount of rainfall ranging from 300 to 500mm annually. The Planning, development and management of water storage and transmission facilities is an attempt to change the spatial and temporal availability of water, to make it available where and when needed. The Government of Swaziland has undertaken the...