+
Percentage of Surface Drinking Water from Intermittent,
Ephemeral, or Headwater Streams in New Jersey
^Paterson
Newark J
jersey City
11} 111111 [) s I) 11IV;
Edison
Trenton
Long Branch^
o
. Lakewood
Camden _
^ —
Legend: This map highlights regional patterns
of dependence on intermittent, ephemeral, and
headwater streams for surface drinking water in
New Jersey. In New Jersey, 2,391 total miles of
streams provide water for surface water intakes
supplying public drinking water systems; of
this, 1,157 miles, or 48%, are intermittent,
ephemeral, or headwater streams. Over 4.2
million people in New Jersey receive drinking
water from public drinking water systems that
rely at least in part on intermittent, ephemeral,
or headwater streams. This analysis compared
the stream length of intermittent, ephemeral,
and headwater streams to total stream length
within all mapped Source Protection Areas
(SPAs) for each county. A SPA is an area
upstream from a drinking water source or
intake that contributes surface water flow to the
drinking water intake during a 24-hour period.
This is based on data that generally do not
include streams less than one mile in length.
Intermittent streams are streams containing
water for only part of the year. Ephemeral
streams flow in response to precipitation events.
First-order streams have been used to represent
headwater streams.
Data Sources: National Hydrography Dataset
Plus at medium resolution; Federal Safe
Drinking Water Information System 4th Quarter
2006 Data.
r Atlantic City
Key:
Intermittent, ephemeral, and
headwater stream miles as
percentage of total stream
miles contained in all SPAs
for a given county
39% - 44%
45% - 56%
57% - 69%
70% - 77%
100%
No Data
SpJ
"\Cape May
0 4
5 9
18
27
36

sr^
PRO^

-------