Extension of normals by precipitation‐data and by comparison with another stream

The factors affecting relationship between precipitation and consequent runoff are multitudinous and their interrelation is exceedingly complex. They vary widely from time to time and place to place. Basic data are meager and the weight to be given to any single factor is usually uncertain. Runoff‐characteristics of drainage‐areas within the same region will frequently be quite dissimilar. Under these circumstances no one should hope to answer conclusively paragraph V(a) of the questionnaire submitted January 4, 1935 by the Conference.