Maryland Department of Natural Resources

Reports

Flow characteristics of Maryland streams


1971, Walker, P.N.

Report of Investigations 16


Abstract

Hydrologic data needed for the beneficial development of the surface-water resources of Maryland are presented in this report.

Mean annual discharge, magnitude and frequency of high and low flows, and flow-duration data are presented for 112 long-term continuous-record gaging stations. These data are based on records that were available through September 30, 1967, and thus include the drought of the 1960’s.

The magnitude and frequency of selected low flows are presented for 6 short-term continuous-record stations and for 44 low-flow partial-record stations to provide additional areal coverage.

A method for determining flood frequency at ungaged sites is presented. Empirical equations relate physical features of a drainage system to peak discharges of selected recurrence intervals. These equations provide a user with the means to estimate the magnitude and frequency of flood peaks at an ungaged site and to evaluate the relative reliability of his estimate.