Tables: Stormwater Management Rules¶

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1. Table 5-1 Green Infrastructure BMPs for Groundwater Recharge, Stormwater Runoff Quality, and/or Stormwater Runoff Quantity¶

Best Management Practice	Stormwater Runoff Quality TSS removal rate (percent)	Stormwater Runoff Quantity	Groundwater Recharge	Minimum separation from seasonal high- water table (feet)
Cistern	0	Yes	No	-
Dry Well(a)	0	No	Yes	2
Grass Swale	50 or less	No	No	2(e) 1(f)
Green Roof	0	Yes	No	-
Manufactured Treatment Device(a) (g)	50 or 80	No	No	Dependent upon the device
Pervious Paving System(a)	80	Yes	Yes(b) No(c)	2(b) 1(c)
Small-Scale Bioretention Basin(a)	80 or 90	Yes	Yes(b) No(c)	2(b) 1(c)
Small-Scale Infiltration Basin(a)	80	Yes	Yes	2
Small-Scale Sand Filter(a) (b)	80	Yes	Yes	2
Vegetative Filter Strip	60-80	No	No	-

Source context and notes

Source revision: Last amended September 21, 2026. (f) The tables below summarize the ability of stormwater best management practices identified and described in the New Jersey Stormwater Best Management Practices Manual to satisfy the green infrastructure, groundwater recharge, stormwater runoff quality, and stormwater runoff quantity standards specified in this chapter. When designed in accordance with the New Jersey Stormwater Best Management Practices Manual and this chapter, the stormwater management measures listed in Tables 5-1, 5-2, and 5-3 shall be presumed to be capable of providing stormwater controls for the design and performance standards as outlined in the tables below. Upon amendment of the New Jersey Stormwater Best Management Practices Manual to reflect additions or deletions of BMPs meeting these standards, or changes in the presumed performance of BMPs designed in accordance with the New Jersey Stormwater BMP Manual, the Department shall publish in the New Jersey Register a notice of administrative change revising the applicable table. Table 5-1 Green Infrastructure BMPs for Groundwater Recharge, Stormwater Runoff Quality, and/or Stormwater Runoff Quantity | Best
Management
Practice | Stormwater
Runoff Quality
TSS removal
rate (percent) | Stormwater
Runoff Quantity | Groundwater
Recharge | Minimum
separation from
seasonal high-
water table
(feet) | | --- | --- | --- | --- | --- | | Cistern | 0 | Yes | No | - | | Dry Well(a) | 0 | No | Yes | 2 | | Grass Swale | 50 or less | No | No | 2(e)
1(f) | | Green Roof | 0 | Yes | No | - | | Manufactured
Treatment
Device(a) (g) | 50 or 80 | No | No | Dependent upon
the device | | Pervious Paving
System(a) | 80 | Yes | Yes(b)
No(c) | 2(b)
1(c) | | Small-Scale
Bioretention
Basin(a) | 80 or 90 | Yes | Yes(b)
No(c) | 2(b)
1(c) | | Small-Scale
Infiltration
Basin(a) | 80 | Yes | Yes | 2 | | Small-Scale
Sand Filter(a) (b) | 80 | Yes | Yes | 2 | | Vegetative Filter
Strip | 60-80 | No | No | - | Table 5-2 Green Infrastructure BMPs for Stormwater Runoff Quantity (or for Groundwater Recharge and/or Stormwater Runoff Quality with a Waiver or Variance from N.J.A.C. 7:8-5.3) | Best Management Practice | Stormwater
Runoff
Quality TSS
removal rate
(percent) | Stormwater
Runoff
Quantity | Groundwater
Recharge | Minimum
separation
from seasonal
high-water
table (feet) | | --- | --- | --- | --- | --- | | Bioretention System | 80 or 90 | Yes | Yes(b)
No(c) | 2(b)
1(c) | | Infiltration Basin | 80 | Yes | Yes | 2 | | Sand Filter(b) | 80 | Yes | Yes | 2 | | Standard Constructed
Wetland | 90 | Yes | No | N/A | | Wet Pond(d) | 50-90 | Yes | No | N/A | | Table 5-3
BMPs for Groundwater Recharge, Stormwater Runoff Quality, and/or Stormwater Runoff
Quantity only with a Waiver or Variance from N.J.A.C. 7:8-5.3 | | | | | | --- | --- | --- | --- | --- | | Best Management Practice | Stormwater
Runoff
Quality
TSS removal
rate (percent) | Stormwater
Runoff
Quantity | Groundwater
Recharge | Minimum
separation
from seasonal
high-water
table
(feet) | | Blue Roof | 0 | Yes | No | N/A | | Extended Detention Basin | 40-60 | Yes | No | 1 | | Manufactured Treatment
Device(h) | 50 or 80 | No | No | Dependent
upon the
device | | Sand Filter(c) | 80 | Yes | No | 1 | | Subsurface Gravel Wetland | 90 | No | No | 1 | | Wet pond | 50-90 | Yes | No | N/A | Table notes: (a) subject to the applicable contributory drainage area limitation specified at N.J.A.C. 7:8-5.3(b); (b) designed to infiltrate into the subsoil; (c) designed with underdrains; (d) designed to maintain at least a 10-foot wide area of native vegetation along at least 50 percent of the shoreline and to include a stormwater runoff retention component designed to capture stormwater runoff for beneficial reuse, such as irrigation; (e) designed with a slope of less than two percent; (f) designed with a slope of equal to or greater than two percent; (g) manufactured treatment devices that meet the definition of green infrastructure at N.J.A.C. 7:8-1.2; (h) manufactured treatment devices that do not meet the definition of green infrastructure at N.J.A.C. 7:8-1.2.

2. Table 5-2 Green Infrastructure BMPs for Stormwater Runoff Quantity (or for Groundwater Recharge and/or Stormwater Runoff Quality with a Waiver or Variance from N.J.A.C. 7:8-5.3)¶

NJAC 7.8-5.2(f)

Best Management Practice	Stormwater Runoff Quality TSS removal rate (percent)	Stormwater Runoff Quantity	Groundwater Recharge	Minimum separation from seasonal high-water table (feet)
Bioretention System	80 or 90	Yes	Yes(b) No(c)	2(b) 1(c)
Infiltration Basin	80	Yes	Yes	2
Sand Filter(b)	80	Yes	Yes	2
Standard Constructed Wetland	90	Yes	No	N/A
Wet Pond(d)	50-90	Yes	No	N/A

Source context and notes

| Pervious Paving
System(a) | 80 | Yes | Yes(b)
No(c) | 2(b)
1(c) | | Small-Scale
Bioretention
Basin(a) | 80 or 90 | Yes | Yes(b)
No(c) | 2(b)
1(c) | | Small-Scale
Infiltration
Basin(a) | 80 | Yes | Yes | 2 | | Small-Scale
Sand Filter(a) (b) | 80 | Yes | Yes | 2 | | Vegetative Filter
Strip | 60-80 | No | No | - | Table 5-2 Green Infrastructure BMPs for Stormwater Runoff Quantity (or for Groundwater Recharge and/or Stormwater Runoff Quality with a Waiver or Variance from N.J.A.C. 7:8-5.3) | Best Management Practice | Stormwater
Runoff
Quality TSS
removal rate
(percent) | Stormwater
Runoff
Quantity | Groundwater
Recharge | Minimum
separation
from seasonal
high-water
table (feet) | | --- | --- | --- | --- | --- | | Bioretention System | 80 or 90 | Yes | Yes(b)
No(c) | 2(b)
1(c) | | Infiltration Basin | 80 | Yes | Yes | 2 | | Sand Filter(b) | 80 | Yes | Yes | 2 | | Standard Constructed
Wetland | 90 | Yes | No | N/A | | Wet Pond(d) | 50-90 | Yes | No | N/A | | Table 5-3
BMPs for Groundwater Recharge, Stormwater Runoff Quality, and/or Stormwater Runoff
Quantity only with a Waiver or Variance from N.J.A.C. 7:8-5.3 | | | | | | --- | --- | --- | --- | --- | | Best Management Practice | Stormwater
Runoff
Quality
TSS removal
rate (percent) | Stormwater
Runoff
Quantity | Groundwater
Recharge | Minimum
separation
from seasonal
high-water
table
(feet) | | Blue Roof | 0 | Yes | No | N/A | | Extended Detention Basin | 40-60 | Yes | No | 1 | | Manufactured Treatment
Device(h) | 50 or 80 | No | No | Dependent
upon the
device | | Sand Filter(c) | 80 | Yes | No | 1 | | Subsurface Gravel Wetland | 90 | No | No | 1 | | Wet pond | 50-90 | Yes | No | N/A | Notes to Tables 5-1, 5-2, and 5-3: Table notes: Table notes: (a) subject to the applicable contributory drainage area limitation specified at N.J.A.C. 7:8-5.3(b); (b) designed to infiltrate into the subsoil; (c) designed with underdrains; (d) designed to maintain at least a 10-foot wide area of native vegetation along at least 50 percent of the shoreline and to include a stormwater runoff retention component designed to capture stormwater runoff for beneficial reuse, such as irrigation; (e) designed with a slope of less than two percent; (f) designed with a slope of equal to or greater than two percent; (g) manufactured treatment devices that meet the definition of green infrastructure at N.J.A.C. 7:8-1.2; (h) manufactured treatment devices that do not meet the definition of green infrastructure at N.J.A.C. 7:8-1.2.

3. Table 5-3 BMPs for Groundwater Recharge, Stormwater Runoff Quality, and/or Stormwater Runoff Quantity only with a Waiver or Variance from N.J.A.C. 7:8-5.3¶

NJAC 7.8-5.2(f)

Table 5-3 BMPs for Groundwater Recharge, Stormwater Runoff Quality, and/or Stormwater Runoff Quantity only with a Waiver or Variance from N.J.A.C. 7:8-5.3
Best Management Practice	Stormwater Runoff Quality TSS removal rate (percent)	Stormwater Runoff Quantity	Groundwater Recharge	Minimum separation from seasonal high-water table (feet)
Blue Roof	0	Yes	No	N/A
Extended Detention Basin	40-60	Yes	No	1
Manufactured Treatment Device(h)	50 or 80	No	No	Dependent upon the device
Sand Filter(c)	80	Yes	No	1
Subsurface Gravel Wetland	90	No	No	1
Wet pond	50-90	Yes	No	N/A

Source context and notes

| Best Management Practice | Stormwater
Runoff
Quality TSS
removal rate
(percent) | Stormwater
Runoff
Quantity | Groundwater
Recharge | Minimum
separation
from seasonal
high-water
table (feet) | | --- | --- | --- | --- | --- | | Bioretention System | 80 or 90 | Yes | Yes(b)
No(c) | 2(b)
1(c) | | Infiltration Basin | 80 | Yes | Yes | 2 | | Sand Filter(b) | 80 | Yes | Yes | 2 | | Standard Constructed
Wetland | 90 | Yes | No | N/A | | Wet Pond(d) | 50-90 | Yes | No | N/A | | Table 5-3
BMPs for Groundwater Recharge, Stormwater Runoff Quality, and/or Stormwater Runoff
Quantity only with a Waiver or Variance from N.J.A.C. 7:8-5.3 | | | | | | --- | --- | --- | --- | --- | | Best Management Practice | Stormwater
Runoff
Quality
TSS removal
rate (percent) | Stormwater
Runoff
Quantity | Groundwater
Recharge | Minimum
separation
from seasonal
high-water
table
(feet) | | Blue Roof | 0 | Yes | No | N/A | | Extended Detention Basin | 40-60 | Yes | No | 1 | | Manufactured Treatment
Device(h) | 50 or 80 | No | No | Dependent
upon the
device | | Sand Filter(c) | 80 | Yes | No | 1 | | Subsurface Gravel Wetland | 90 | No | No | 1 | | Wet pond | 50-90 | Yes | No | N/A | Notes to Tables 5-1, 5-2, and 5-3: Table notes: (a) subject to the applicable contributory drainage area limitation specified at N.J.A.C. 7:8-5.3(b); Table notes: (a) subject to the applicable contributory drainage area limitation specified at N.J.A.C. 7:8-5.3(b); (b) designed to infiltrate into the subsoil; (c) designed with underdrains; (d) designed to maintain at least a 10-foot wide area of native vegetation along at least 50 percent of the shoreline and to include a stormwater runoff retention component designed to capture stormwater runoff for beneficial reuse, such as irrigation; (e) designed with a slope of less than two percent; (f) designed with a slope of equal to or greater than two percent; (g) manufactured treatment devices that meet the definition of green infrastructure at N.J.A.C. 7:8-1.2; (h) manufactured treatment devices that do not meet the definition of green infrastructure at N.J.A.C. 7:8-1.2.

4. Table 2¶

NJAC 7.8-5.3(b)

Best Management Practice	Maximum Contributory Drainage Area
1. Dry Well	1 acre
2. Manufactured Treatment Device	2.5 acres
3. Pervious Paving Systems	Area of additional inflow cannot exceed three times the area occupied by the BMP
4. Small-scale Bioretention Systems	2.5 acres
5. Small-scale Infiltration Basin	2.5 acres
6. Small-scale Sand Filter	2.5 acres

Source context and notes

# N.J.A.C. 7:8 - Stormwater Management Rules (September 21, 2026) Source revision: Last amended September 21, 2026. (b) Except as provided at (f) through (j) below, to satisfy the groundwater recharge and stormwater runoff quality standards at N.J.A.C. 7:8-5.4 and 5.5, the design engineer shall utilize green infrastructure BMPs identified in Table 5-1 at N.J.A.C. 7:8-5.2(f) and/or an alternative stormwater management measure approved in accordance with N.J.A.C. 7:8-5.2(g). The following green infrastructure BMPs are subject to the following maximum contributory drainage area limitations: | Best Management Practice | Maximum Contributory Drainage Area | | --- | --- | | 1. Dry Well | 1 acre | | 2. Manufactured Treatment Device | 2.5 acres | | 3. Pervious Paving Systems | Area of additional inflow cannot exceed three times the
area occupied by the BMP | | 4. Small-scale Bioretention Systems | 2.5 acres | | 5. Small-scale Infiltration Basin | 2.5 acres | | 6. Small-scale Sand Filter | 2.5 acres |

5. Table 5-4: Water Quality Design Storm Distribution¶

NJAC 7.8-5.5(d)

Time (Minutes)	Cumulative Rainfall (Inches)	Time (Minutes)	Cumulative Rainfall (Inches)	Time (Minutes)	Cumulative Rainfall (Inches)
1	0.00166	41	0.1728	81	1.0906
2	0.00332	42	0.1796	82	1.0972
3	0.00498	43	0.1864	83	1.1038
4	0.00664	44	0.1932	84	1.1104
5	0.00830	45	0.2000	85	1.1170
6	0.00996	46	0.2117	86	1.1236
7	0.01162	47	0.2233	87	1.1302
8	0.01328	48	0.2350	88	1.1368
9	0.01494	49	0.2466	89	1.1434
10	0.01660	50	0.2583	90	1.1500
11	0.01828	51	0.2783	91	1.1550
12	0.01996	52	0.2983	92	1.1600
13	0.02164	53	0.3183	93	1.1650
14	0.02332	54	0.3383	94	1.1700
15	0.02500	55	0.3583	95	1.1750
16	0.03000	56	0.4116	96	1.1800
17	0.03500	57	0.4650	97	1.1850
18	0.04000	58	0.5183	98	1.1900
19	0.04500	59	0.5717	99	1.1950
20	0.05000	60	0.6250	100	1.2000
21	0.05500	61	0.6783	101	1.2050
22	0.06000	62	0.7317	102	1.2100
23	0.06500	63	0.7850	103	1.2150
24	0.07000	64	0.8384	104	1.2200
25	0.07500	65	0.8917	105	1.2250
26	0.08000	66	0.9117	106	1.2267
27	0.08500	67	0.9317	107	1.2284
28	0.09000	68	0.9517	108	1.2300
29	0.09500	69	0.9717	109	1.2317
30	0.10000	70	0.9917	110	1.2334
31	0.10660	71	1.0034	111	1.2351
32	0.11320	72	1.0150	112	1.2367
33	0.11980	73	1.0267	113	1.2384
34	0.12640	74	1.0383	114	1.2400
35	0.13300	75	1.0500	115	1.2417
36	0.13960	76	1.0568	116	1.2434
37	0.14620	77	1.0636	117	1.2450
38	0.15280	78	1.0704	118	1.2467
39	0.15940	79	1.0772	119	1.2483
40	0.16600	80	1.0840	120	1.2500

Source context and notes

(d) The water quality design storm is 1.25 inches of rainfall in two hours. Water quality calculations shall take into account the distribution of rain from the water quality design storm, as reflected in Table 5-4 below. The calculation of the volume of runoff may take into account the implementation of stormwater management measures. Table 5-4: Water Quality Design Storm Distribution | Time
(Minutes) | Cumulative
Rainfall
(Inches) | Time
(Minutes) | Cumulative
Rainfall
(Inches) | Time
(Minutes) | Cumulative
Rainfall
(Inches) | | --- | --- | --- | --- | --- | --- | | 1 | 0.00166 | 41 | 0.1728 | 81 | 1.0906 | | 2 | 0.00332 | 42 | 0.1796 | 82 | 1.0972 | | 3 | 0.00498 | 43 | 0.1864 | 83 | 1.1038 | | 4 | 0.00664 | 44 | 0.1932 | 84 | 1.1104 | | 5 | 0.00830 | 45 | 0.2000 | 85 | 1.1170 | | 6 | 0.00996 | 46 | 0.2117 | 86 | 1.1236 | | 7 | 0.01162 | 47 | 0.2233 | 87 | 1.1302 | | 8 | 0.01328 | 48 | 0.2350 | 88 | 1.1368 | | 9 | 0.01494 | 49 | 0.2466 | 89 | 1.1434 | | 10 | 0.01660 | 50 | 0.2583 | 90 | 1.1500 | | 11 | 0.01828 | 51 | 0.2783 | 91 | 1.1550 | | 12 | 0.01996 | 52 | 0.2983 | 92 | 1.1600 | | 13 | 0.02164 | 53 | 0.3183 | 93 | 1.1650 | | 14 | 0.02332 | 54 | 0.3383 | 94 | 1.1700 | | 15 | 0.02500 | 55 | 0.3583 | 95 | 1.1750 | | 16 | 0.03000 | 56 | 0.4116 | 96 | 1.1800 | | 17 | 0.03500 | 57 | 0.4650 | 97 | 1.1850 | | 18 | 0.04000 | 58 | 0.5183 | 98 | 1.1900 | | 19 | 0.04500 | 59 | 0.5717 | 99 | 1.1950 | | 20 | 0.05000 | 60 | 0.6250 | 100 | 1.2000 | | 21 | 0.05500 | 61 | 0.6783 | 101 | 1.2050 | | 22 | 0.06000 | 62 | 0.7317 | 102 | 1.2100 | | 23 | 0.06500 | 63 | 0.7850 | 103 | 1.2150 | | 24 | 0.07000 | 64 | 0.8384 | 104 | 1.2200 | | 25 | 0.07500 | 65 | 0.8917 | 105 | 1.2250 | | 26 | 0.08000 | 66 | 0.9117 | 106 | 1.2267 | | 27 | 0.08500 | 67 | 0.9317 | 107 | 1.2284 | | 28 | 0.09000 | 68 | 0.9517 | 108 | 1.2300 | | 29 | 0.09500 | 69 | 0.9717 | 109 | 1.2317 | | 30 | 0.10000 | 70 | 0.9917 | 110 | 1.2334 | | 31 | 0.10660 | 71 | 1.0034 | 111 | 1.2351 | | 32 | 0.11320 | 72 | 1.0150 | 112 | 1.2367 | | 33 | 0.11980 | 73 | 1.0267 | 113 | 1.2384 | | 34 | 0.12640 | 74 | 1.0383 | 114 | 1.2400 | | 35 | 0.13300 | 75 | 1.0500 | 115 | 1.2417 | | 36 | 0.13960 | 76 | 1.0568 | 116 | 1.2434 | | 37 | 0.14620 | 77 | 1.0636 | 117 | 1.2450 | | 38 | 0.15280 | 78 | 1.0704 | 118 | 1.2467 | | 39 | 0.15940 | 79 | 1.0772 | 119 | 1.2483 | | 40 | 0.16600 | 80 | 1.0840 | 120 | 1.2500 |

6. Table 5-5: Current Precipitation Adjustment Factors¶

NJAC 7.8-5.7(c)

County	Current Precipitation Adjustment Factors
	2-year Design Storm	10-year Design Storm	100-year Design Storm
Atlantic	1.01	1.02	1.03
Bergen	1.01	1.03	1.06
Burlington	0.99	1.01	1.04
Camden	1.03	1.04	1.05
Cape May	1.03	1.03	1.04
Cumberland	1.03	1.03	1.01
Essex	1.01	1.03	1.06
Gloucester	1.05	1.06	1.06
Hudson	1.03	1.05	1.09
Hunterdon	1.02	1.05	1.13
Mercer	1.01	1.02	1.04
Middlesex	1.00	1.01	1.03
Monmouth	1.00	1.01	1.02
Morris	1.01	1.03	1.06
Ocean	1.00	1.01	1.03
Passaic	1.00	1.02	1.05
Salem	1.02	1.03	1.03
Somerset	1.00	1.03	1.09
Sussex	1.03	1.04	1.07
Union	1.01	1.03	1.06
Warren	1.02	1.07	1.15

Source context and notes

(NOAA), National Weather Service’s Atlas 14 Point Precipitation Frequency Estimates: NJ, in accordance with the location(s) of the drainage area(s) of the site. This data is available at: https://hdsc.nws.noaa.gov/hdsc/pfds/pfds_map_cont.html?bkmrk=nj; and 2. The applicant shall utilize Table 5-5 below, which sets forth the applicable multiplier for the drainage area(s) of the site, in accordance with the county or counties where the drainage area(s) of the site is located. Where the major development lies in more than one county, the precipitation values shall be adjusted according to the percentage of the drainage area in each county. Alternately, separate rainfall totals can be developed for each county using the values in the table below. Table 5-5: Current Precipitation Adjustment Factors | County | Current Precipitation Adjustment Factors | | | | --- | --- | --- | --- | | | 2-year
Design Storm | 10-year
Design Storm | 100-year
Design Storm | | Atlantic | 1.01 | 1.02 | 1.03 | | Bergen | 1.01 | 1.03 | 1.06 | | Burlington | 0.99 | 1.01 | 1.04 | | Camden | 1.03 | 1.04 | 1.05 | | Cape May | 1.03 | 1.03 | 1.04 | | Cumberland | 1.03 | 1.03 | 1.01 | | Essex | 1.01 | 1.03 | 1.06 | | Gloucester | 1.05 | 1.06 | 1.06 | | Hudson | 1.03 | 1.05 | 1.09 | | Hunterdon | 1.02 | 1.05 | 1.13 | | Mercer | 1.01 | 1.02 | 1.04 | | Middlesex | 1.00 | 1.01 | 1.03 | | Monmouth | 1.00 | 1.01 | 1.02 | | Morris | 1.01 | 1.03 | 1.06 | | Ocean | 1.00 | 1.01 | 1.03 | | Passaic | 1.00 | 1.02 | 1.05 | | Salem | 1.02 | 1.03 | 1.03 | | Somerset | 1.00 | 1.03 | 1.09 | | Sussex | 1.03 | 1.04 | 1.07 | | Union | 1.01 | 1.03 | 1.06 | | Warren | 1.02 | 1.07 | 1.15 |

7. Table 5-6: Future Precipitation Change Factors¶

NJAC 7.8-5.7(d)

County	Future Precipitation Change Factors
	2-year Design Storm	10-year Design Storm	100-year Design Storm
Atlantic	1.22	1.24	1.39
Bergen	1.20	1.23	1.37
Burlington	1.17	1.18	1.32
Camden	1.18	1.22	1.39
Cape May	1.21	1.24	1.32
Cumberland	1.20	1.21	1.39
Essex	1.19	1.22	1.33
Gloucester	1.19	1.23	1.41
Hudson	1.19	1.19	1.23
Hunterdon	1.19	1.23	1.42
Mercer	1.16	1.17	1.36
Middlesex	1.19	1.21	1.33
Monmouth	1.19	1.19	1.26
Morris	1.23	1.28	1.46
Ocean	1.18	1.19	1.24
Passaic	1.21	1.27	1.50
Salem	1.20	1.23	1.32
Somerset	1.19	1.24	1.48
Sussex	1.24	1.29	1.50
Union	1.20	1.23	1.35
Warren	1.20	1.25	1.37

Source context and notes

(d) Table 5-6 below sets forth the change factors to be used in determining the projected two-, 10-, and 100-year storm events for use in this chapter, which are organized alphabetically by county. The precipitation depth of the projected two-, 10-, and 100-year storm events of a site shall be determined by multiplying the precipitation depth of the two-, 10-, and 100-year storm events determined from the National Weather Service’s Atlas 14 Point Precipitation Frequency Estimates pursuant to (c)1 above, by the change factor in Table 5-6 below, in accordance with the county or counties where the drainage area(s) of the site is located. Where the major development and/or its drainage area lies in more than one county, the precipitation values shall be adjusted according to the percentage of the drainage area in each county. Alternately, separate rainfall totals can be developed for each county using the values in the table below. Table 5-6: Future Precipitation Change Factors | County | Future Precipitation Change Factors | | | | --- | --- | --- | --- | | | 2-year
Design Storm | 10-year
Design Storm | 100-year
Design Storm | | Atlantic | 1.22 | 1.24 | 1.39 | | Bergen | 1.20 | 1.23 | 1.37 | | Burlington | 1.17 | 1.18 | 1.32 | | Camden | 1.18 | 1.22 | 1.39 | | Cape May | 1.21 | 1.24 | 1.32 | | Cumberland | 1.20 | 1.21 | 1.39 | | Essex | 1.19 | 1.22 | 1.33 | | Gloucester | 1.19 | 1.23 | 1.41 | | Hudson | 1.19 | 1.19 | 1.23 | | Hunterdon | 1.19 | 1.23 | 1.42 | | Mercer | 1.16 | 1.17 | 1.36 | | Middlesex | 1.19 | 1.21 | 1.33 | | Monmouth | 1.19 | 1.19 | 1.26 | | Morris | 1.23 | 1.28 | 1.46 | | Ocean | 1.18 | 1.19 | 1.24 | | Passaic | 1.21 | 1.27 | 1.50 | | Salem | 1.20 | 1.23 | 1.32 | | Somerset | 1.19 | 1.24 | 1.48 | | Sussex | 1.24 | 1.29 | 1.50 | | Union | 1.20 | 1.23 | 1.35 | | Warren | 1.20 | 1.25 | 1.37 |