Other methods may also help to reduce the effects of these biases. Errors in the estimates of precipitation from the raingage networks decrease as the density of the raingage networks increase. This is consistent with classical approaches to raingage network design. Figure 5 shows the average storm RMSE as a function of gage density for estimates of MAP determined from hourly precipitation. The watershed area is important in the quantification of the errors.
Larger areas tend to have smaller errors as compared to smaller areas.
Figure 5 shows the largest and smallest of the sub-catchments in the WOH region. The estimates of MAP are taken from simulated hourly precipitation. Related Publications Bradley, A. A., C. Peters-Lidard, B. R. Nelson, J. A. Smith, and C. B. Young, 1999. The Iowa Institute of Hydraulic Research. All rights reserved.