Accession Number:

ADA229512

Title:

Analysis of Winter Low-Flow Rates in New Hampshire Streams

Descriptive Note:

Special rept.

Corporate Author:

COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER NH

Personal Author(s):

Report Date:

1990-08-01

Pagination or Media Count:

17.0

Abstract:

The timing and magnitude of winter low flows vary regionally in response to basin climate and geology. This report investigates the regionalization of low flows in the White Mountain and Upland physiographic sections of New Hampshire to establish a data set that will be used in improved analytical methods for estimating winter flows. For summer and winter low flow periods, 3-, 7-, 14-and 30-day duration low flow events are estimated for various sizes of drainage areas 50 to 230 sq. mi. The likelihood of a low-flow event increases as winter proceeds in the Winter Mountains, but is more evenly distributed throughout the winter in the Upland. White Mountain streams have higher runoff volumes through all seasons, except winter. The average magnitudes of winter low-flow events in both physiographic sections are highly correlated with drainage area size. Mean basin elevation was of little additional help in explaining winter low-flow events within either physiographic section, though it was important in explaining summer low-flow variation in the White Mountains. JHD

Subject Categories:

  • Hydrology, Limnology and Potamology

Distribution Statement:

APPROVED FOR PUBLIC RELEASE