By Anthony J. Velnich U.S. GEOLOGICAL SURVEY Open-File
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DRAINAGE AREAS IN NEW JERSEY ATLANTIC COASTAL BASINS, SOUTH AMBOY TO CAPE MAY By Anthony J. Velnich U.S. GEOLOGICAL SURVEY Open-File Report 84-150 Prepared in cooperation with the UNITED STATES ARMY, CORPS OF ENGINEERS, PHILADELPHIA DISTRICT and the NEW JERSEY DEPARTMENT OF ENVIRONMENTAL PROTECTION, DIVISION OF WATER RESOURCES Trenton, New Jersey 198M UNITED STATES DEPARTMENT OF THE INTERIOR WILLIAM P. CLARK, Secretary GEOLOGICAL SURVEY Dallas L. Peck, Director For additional information Copies of this report can be write to: purchased from: District Chief Open-File Services Section U.S. Geological Survey U.S. Geological Survey Room 418, Federal Building Box 25425, Federal Center 402 East State Street Denver, Colorado 80225 Trenton, New Jersey 08608 (Telephone: [3031 234-5888) CONTENTS Page Abstract - - 1 Introduction-- - - - 1 Determination of drainage areas 3 Explanation of tabular data- 3 Selected references 5 ILLUSTRATION Figure 1. Map showing location of Atlantic Coastal basins drainage divide for streams from South Amboy to Cape May, N.J. 2 TABLES Table 1. Drainage areas at stream mouths, in the Atlantic Coastal basins, from South Amboy to Cape May, N.J. 6 2. Drainage areas at selected sites on streams in the Atlantic Coastal basins from South Amboy to Cape May, N.J. 13 iii FACTORS FOR CONVERTING INCH-POUND UNITS TO INTERNATIONAL SYSTEM UNITS (SI) For those readers who may prefer to use metric units rather than inch-pound units, the conversion factors for the terms used in this report are listed below: Multiply inch-pound unit By To obtain metric unit feet (ft) 0.3048 meters (m) miles (mi) 1.609 kilometers (km) square miles 2.590 square kilometers (mi 2 ) (km 2 ) iv DRAINAGE AREAS IN NEW JERSEY: ATLANTIC COASTAL BASINS, SOUTH AMBOY TO CAPE MAY By Anthony J. Velnich ABSTRACT Drainage areas of New Jersey streams in the coastal basin from South Amboy to Cape May are listed for more than 700 sites. Tables list the descriptive location of each site, the latitude and longitude, county, and National Topographic map name. For gaged sites established through 1982, the U.S. Geological Survey station name and site number are also shown. The data are presented alphabetically by stream name and in downstream order. Drainage areas were tabulated for named streams and unnamed streams with a drainage area greater than 5 square miles. The methods used to delineate the drainage divides, measure areas, and determine mouths of streams follow the guidelines developed by the U.S. Water Resources Council. INTRODUCTION Drainage areas of New Jersey streams in the Atlantic Coastal basin from South Amboy to Cape May (fig. 1) are listed for more than 700 sites. Tables presented in this report include a descriptive location of each site, the latitude and longitude, county, and map name (National Topographic Map, standard series, 1:24,000-scale, 7 1 / 2 -minute). Official U.S. Geological Survey gaging station names and numbers are given for gaged sites. The drainage area was determined for all named streams and unnamed streams with drainage areas greater than 5 mi 2 . The data are presented alphabetically for named streams and in downstream order for selected sites and gaging stations. These listings contain the most recent data available and supersede all previously published data. This report was prepared in cooperation with the Corps of Engineers, U.S. Army, Philadelphia District, and the New Jersey Department of Environmental Protection, Division of Water Resources . Final determination of drainage areas was coordinated with the following: U.S. Department of Agriculture, Soil Conservation Service, Somerset, N.J. U.S. Army, Corps of Engineers, Philadelphia District, Philadelphia, Pa. EXPLANATION Drainage divide, Atlantic Coastal basins, South Amboy to Cape May -41' -40C -39fl 10 0 10 20 30 KILOMETERS 76' I Base from U.S. Geological Survey State Base Map, 1:500,000 Figure 1. --Atlantic Coastal basins drainage divide for streams from South Amboy to Cape May, N.J. U.S. Army, Corps of Engineers, New York District, New York, N.Y. New Jersey Department of Environmental Protection, Division of Water Resources, Trenton, N.J. DETERMINATION OF DRAINAGE AREAS The delineations of drainage areas are based on guidelines of the U.S. Water Resources Council (1951). Drainage divides are based on information from topographic maps, with some field checking. Other available information, such as large scale maps, storm drain plans, and diversions, was considered. Drainage divides are first drawn on topographic maps. The maps are divided into nine rectangles, called quadrilaterals, that are 2V 2 minutes of latitude by 2 l / 2 minutes of longitude in area. The area of each quadrilateral was determined, based on the principles of map projection and can be found in published tables (U.S. Water Resources Council, 1951, p. 34-39). To determine a drainage area, individual subareas are planimetered within a quadrilateral. Each subarea is measured at least twice. If the measured values differ by less than 0.5 percent, the average value obtained is used. Sets of measurements with larger differences are not accepted. The sum of the measured values of subareas in a quadrilateral should then be within 0.5 percent of the known quadrilateral area. If not, individual subareas are then adjusted, based on relative size, making the sum of the subareas equal to the area of the quadrilateral. A scale factor is used to adjust the planimeter readings to square miles and to compensate for paper shrinkage or expansion. This procedure is described in greater detail in Interagency Coordination of Drainage Area Data (U.S. Water Resources Council, 1951, p. 41-48). Delineated subareas are then summed to determine the drainage area at a given site. EXPLANATION OF TABULAR DATA Named streams are presented alphabetically in table 1. The stream names are those shown on the National Topographic Map, standard series (1:24,000-scale) and listed in the National Gazetteer of the United States (U.S. Geological Survey, 1982a). For convenient identification, unnamed tributaries are numbered, generally in consecutive downstream order. The drainage areas presented are for streams at their mouths, unless noted otherwise. In all but a few cases, when two streams join to form a stream of a different name, the stream having the larger drainage area at the confluence is considered the headwater or main-stem stream. Headwater streams are indicated in the tables. Table 2 contains drainage areas for selected sites on Atlantic coastal streams listed by major drainage basin, in downstream order. The sites include all named streams and unnamed streams draining more than 5 square miles and gaged sites es tablished before 1982. Streams that are entirely tidal are not included. Any stream whose basin lies below the 10-foot contour is considered entirely tidal. An explanation of the tabular data follows: The basin headings are the first order tributaries to the Atlantic Ocean and embayments. These headings are selected for the convenience of locating a specific site. Stream.--At gaged sites, the official gaging station name is used. A semicolon (;) separates the gage name from any additional information. Ungaged sites are described according to their location. Street names, towns, and route numbers are from the National Topographic Map, standard series (1:24,000-scale) and from the New Jersey Official Highway Map and Guide, 1980-81 (New Jersey Department of Transportation, 1980). Additional information on currently operated gaging stations in the Atlantic Coastal basins can be found in Water Resources Data for New Jersey (U.S. Geo logical Survey, 1982b). Stream names shown in parentheses are those used on older edition maps. County.--The county where the site is located is listed. If the site is located on a border between two counties, both are listed. Counties are New Jersey counties, except where noted. Drainage area.--The drainage area, in square miles, is determined from delineations on topographic maps. The methods used to delineate the drainage basins and determine the areas and mouths of streams follow the guidelines of the U.S. Water Resources Council (1951). Areas were measured by polar- planimeter or electronic digitizer and programmable calcu lator . Topographic Map.--The name of the National Topographic Map, standard series, 1:24,000 scale, 7 1 / 2 -niinute quadrangle, on which the site is located is listed. Latitude-Longitude.--The latitude and longitude of the site is determined to the nearest second. The first six digits are the latitude consisting of three two-digit pairs degrees, minutes, and seconds, respectively. The next seven digits are the longitude the first three digits are degrees, followed by two digits each for minutes and seconds, as illustrated below. Latitude Longitude dd mm ss ddd mm ss where: d degrees m minutes s seconds Station number.--The U.S. Geological Survey station number is in cluded for each gaged site. This number contains a two- digit number, "01," which represents streams in the Atlantic Slope basin, and a six-digit downstream order number. A complete description of downstream order and station numbers is given in Water Resources Data for New Jersey (U.S. Geological Survey, 1982b). SELECTED REFERENCES New Jersey Department of Transportation, 1980, New Jersey Official Highway Map and Guide, 1980-81: scale, one inch equals approximately 1 miles, 1 sheet. U.S. Geological Survey, 1964, Cartographic Tables: Topographic Instructions of the United States Geological Survey, Book 5, Chapters 5B1 and 5B2. ____ 1982a, The National Gazetteer of the United States - New Jersey 1982: U.S. Geological Survey Professional Paper 1200-NJ, 220 p. ____1982b, Water Resources Data for New Jersey, Volume 1: Water-Data Report NJ-81-1, 329 p. U.S. Water Resources Council, 1951 [19631, Interagency Coordina tion of Drainage Area Data: Notes on Hydrologic Activi ties-Bulletin No.