Regionalized equations for bankfull discharge and channel characteristics of streams in New York State — Hydrologic Regions 1 and 2 in the Adirondack Region of northern New York
Links
- More information: USGS Index Page (html)
- Document: Report (pdf)
- Related Works:
- Scientific Investigations Report 2004-5247 - Regionalized Equations for Bankfull-Discharge and Channel Characteristics of Streams in New York State—Hydrologic Region 5 in Central New York
- Scientific Investigations Report 2006-5075 - Regionalized Equations for Bankfull-Discharge and Channel Characteristics of Streams in New York State— Hydrologic Region 7 in Western New York
- Scientific Investigations Report 2005-5100 - Regionalized Equations for Bankfull-Discharge and Channel Characteristics of Streams in New York State—Hydrologic Region 6 in the Southern Tier of New York
- Scientific Investigations Report 2007-5227 - Regionalized Equations for Bankfull-Discharge and Channel Characteristics of Streams in New York State—Hydrologic Region 3 East of the Hudson River
- Scientific Investigations Report 2009-5144 - Bankfull Discharge and Channel Characteristics of Streams in New York State
- NGMDB Index Page: National Geologic Map Database Index Page (html)
- Download citation as: RIS | Dublin Core
Abstract
Equations that relate drainage area to bankfull discharge and channel characteristics (width, depth, and cross-sectional area) at gaged sites are needed to define bankfull-discharge and channel characteristics at ungaged sites and to provide information for watershed assessments, stream-channel classification, and design of stream-restoration projects. Such equations are most accurate if derived from streams within an area of uniform hydrologic, climatic, and physiographic conditions and applied only within that region.
Stream-survey and discharge data from 15 active (currently gaged in 2005) streamflow-gaging stations and 1 inactive (discontinued) streamflow-gaging station in hydrologic Regions 1 and 2 were used in linear-regression analyses to relate drainage area to bankfull discharge and bankfull-channel width, depth, and cross-sectional area. The four resulting equations are the following:
(1) bankfull discharge, in cubic feet per second = 49.6*(drainage area, in square miles)0.849;
(2) bankfull channel width, in feet = 21.5*(drainage, in square miles)0.362;
(3) bankfull channel depth, in feet = 1.06*(drainage area, in square miles)0.329; and
(4) bankfull channel cross-sectional area, in square feet = 22.3*(drainage area, in square miles)0.694.
The coefficients of determination (R2) for these four equations are 0.95, 0.89, 0.89, and 0.97, respectively. The high coefficients of determination for these equations indicate that much variability is explained by drainage area. Recurrence intervals for the estimated bankfull discharge of each stream ranged from 1.01 to 3.80 years; the mean recurrence interval was 2.13 years. The 16 surveyed streams were classified by Rosgen stream type; most were B- and C-type, with a few E- and F-type cross sections.
The hydrologic Regions 1 and 2 equation for the relation between bankfull discharge and drainage area was graphically compared to curves developed for 5 other hydrologic regions in New York State. The 95-percent confidence interval for the hydrologic Regions 1 and 2 curve fully encompassed the curves for Regions 4a, 5, and 6, showing that there are very few differences in the relation between drainage area and bankfull discharge in these four regions. However, the curves for Regions 4 and 7 lay outside the 95 percent confidence intervals of the Region 3 curve, indicating that these 3 regions do not have similar bankfull-discharge to drainage area relations.
Suggested Citation
Mulvihill, C.I., Filopowicz, Amy, Coleman, Arthur, Baldigo, B.P., 2007, Regionalized Equations for Bankfull Discharge and Channel Characteristics of Streams in New York State — Hydrologic Regions 1 and 2 in the Adirondack Region of Northern New York: U.S. Geological Survey Scientific Investigations Report 2007–5189, 19 p., https://pubs.er.usgs.gov/publication/sir20075189.
ISSN: 2328-0328 (online)
Study Area
Table of Contents
- Abstract
- Introduction
- Methods
- Regional Equations for Bankfull Discharge and Channel Characteristics of Streams
- Limitations of the Study
- Summary and Conclusions
- Acknowledgments
- References Cited
Publication type | Report |
---|---|
Publication Subtype | USGS Numbered Series |
Title | Regionalized equations for bankfull discharge and channel characteristics of streams in New York State — Hydrologic Regions 1 and 2 in the Adirondack Region of northern New York |
Series title | Scientific Investigations Report |
Series number | 2007-5189 |
DOI | 10.3133/sir20075189 |
Year Published | 2007 |
Language | English |
Publisher | U.S. Geological Survey |
Publisher location | Reston, VA |
Contributing office(s) | New York Water Science Center |
Description | iv, 18 p. |
Country | United States |
State | New York |
Online Only (Y/N) | Y |
Additional Online Files (Y/N) | Y |