The heating of streams is receiving growing attention for many reasons. The Analysis of Stream heating for natural sources has been carried out with considerable success. In order to determine the effects of terrain radiation, the study problem was divided into three parts. First, the format for data analysis, preferably by a computer. Secondly, a field study to verify the experimental results in a prototype situation, and thirdly an analysis and field study to check the effect of shading by terrain from direct (shortwatve) solar radiation.