यदि किसी नदी का विसर्जन 3 क्युमेक प्रति मीटर चौड़ाई है और गाद कारक (silt factor) 1.2 है, तो लेसी की सामान्य अपमार्जन गहराई (scour depth) होगी:

Groynes are constructed for river bank protection. When a groyne is inclined downstream in the direction of flow, it is designated as a:

What is the available moisture depth for evapotranspiration in a root zone of 1 m depth soil, if the dry unit weight of soil is 1.5 g/cc, field capacity is 30%, and permanent wilting point is 10%?