NCS000515_04Storm Sewer System Info_20200921

Comprehensive Stormwater Management Program
1.0 Storm Sewer System Information
1.1 Population Served
The Town's present population is 3,569 according to 2010 US Census Data (from NC
Office of State Budget and Management). This is approximately a 1.2% decrease from the
2000 estimate of 3,616. No seasonal population was identified. Estimated population
within the ETJ is 1,520.
1.2 Growth Rate
Although the annualized 10-year growth rate from 1990 to 2000 was approximately
32.4% based on 2000 US Census data, the population within the Town has remained
flat from 2000 to 2010.
1.3 Jurisdictional and MS4 Services Areas:
City Limits Plus ETJ: 5.96 Square Miles.
MS4 Services area: 2.14 Square Miles.
1.4 MS4 Conveyance System:
Storm drainage within the Town of China Grove consists of a broken network of pipes,
ditches and open channels, which were installed at different times by many different
entities. The flow of storm water travels through both public and privately maintained
areas, and the level of improvements installed are the option of the property owner.
The overall drainage area is relatively small and is served by three major creeks and
numerous tributary steams. Therefore, the typical drainage path from overland flow to
the outfall is short.
The Town recently inventoried the conveyance system and prepared detailed maps of
the entire system within the Town's municipal boundary limits.
Existing stormwater piping: +24,000 feet of 8" to 48" diameter piping
Stormwater inlets: +276 inlets
Outfalls or discharge points: +60 (size from 12" to 60" diameter)
Figure 3 of Appendix A is a location map of all inventoried outfalls within the Town's
municipal boundaries. Appendix M includes detailed system maps showing the
location of all inlets, piping and outfalls.
Pease Commission No. 212129
March 2012

Comprehensive Stormwater Management Program
1.5 Land Use Composition Estimates
ETJ Summa
Zoning
Classification
Total
Existing
Area within
ETJ
Acres
Minimum
Residential
Lot Size
(Sq Ft)
Approximate
Existing
Units per
Acre
Allowable
Units Under
Current
Zoning
Persons per
Unit
Total
Projected
Allowable
Population
B-1
2.393
B-2
29.331
B-3
190.046
M-1
949.1
M-2
152.326
-1
95.94
R-1
829.056
8,500
5.1
4,249
2.5829
10,974
R-2
209.745
7,0
6.2
1,305
2.5829
3,371
R-3
353.276
7,000
6.2
2,198
2.5829
5,678
R-R
1823.559
10,000
4.4
7,943
2.5829
20,51
R-S
551.872
12,000
3.6
2,003
2.5829
5,174
Unclassified
43 560
1.0
0
2.5829
Totals
5186.731
1
17 6
45,7151
Current Land Use
Residential 73%
Business and Commercial 4%
Manufacturing and Industrial 21%
Open Space 2%
1.6 Estimate Methodoloav
Percentages were estimated from zoning map classifications.
1.7 TMDL Identification
The USEPA developed an approach called total maximum daily loads (TMDL)
for determining the total waste (pollutant) loading from point and nonpoint
sources that a stream or other water body can assimilate and maintain its
designated uses. With the TMDL approach streams, which do not meet water
quality standards, are identified and the State establishes priorities for actions
Pease Commission No. 212129
March 2012

Comprehensive Stormwater Management Program
needed to meet water quality goals. There are no defined TMDLs within the
Town's watershed.
Pease Commission No. 212129
March 2012