Dr. Stewart Farrell

Coastal Research Center Thursday September 20, 2018

STOCKTON UNIVERSITY COASTAL CENTER LBI RESEARCH INITIATIVES

• New Jersey’s Coastline is about 130 miles long.

• The Coast contains eroding bluff shorelines in the north and barrier island complexes in the south.

• Long Beach Island is a barrier island that divides the NJ coastline.

Beach Surveys Cover More Than the Beach

Typical Conditions

20 YEARS of SHORELINE CHANGE 26th STREET, BARNEGAT LIGHT, LBI

LBI Shoreline Change

1879 - 2010

1879 1920 1931 1944 1955 1962 1986 1995 2002

Nuisance Flooding More than a Nuisance &

Becoming More Common as Time Passes

In 2018, Long Beach Township

Decided to Evaluate Chronic

Municipal Flooding

Cumulative Tide Records for Absecon Island, NJ

A True Nuisance Flood: 1. Is NOT Announced in the Media 2. Commonly Tied to Lunar/Solar Alignment 3. Compounded with a Northeast Wind 4. Happens on all Barrier Islands < 5.5’ MLW

NOAA Predictions for Sea Level Rise by Year 2100 AD

Low Global Mean Sea Level Rise Rate = 1.00 feet Intermediate-Low GMSL Rise Rate = 1.64 feet Intermediate GMSL Rise Rate = 3.28 feet Intermediate-High GMSL Rise Rate = 4.92 feet High Global Sea Level Rise Rate = 6.56 feet Extreme Global Sea Level Rise Rate = 8.20 feet. * NOAA Technical Report NOS CO-OS 083 January 2017

Installation! Open the Stormwater Vault, Secure the HOBO Sensor & Measure c/l

Distance from the top Surface, GPS the Top Surface

Nuisance Flooding Data from Avalon, NJ

FEMA Watershed Management Planning Premium Reduction

Premium Reduction

SFHA* Non-SFHA**4,500+ 1 45% 10%

4,000 – 4,499 2 40% 10%3,500 – 3,999 3 35% 10%3,000 – 3,499 4 30% 10%2,500 – 2,999 5 25% 10%2,000 – 2,499 6 20% 10%1,500 – 1,999 7 15% 5%1,000 – 1,499 8 10% 5%

500 – 999 9 5% 5%0 – 499 10 0% 0%

Credit Points Class

* Special Flood Hazard Area

The Community Rating System (CRS) is a voluntary program for National Flood Insurance Program (NFIP) participating communities. Goals are to reduce flood damages to insurable property, strengthen and support the insurance aspects of the NFIP, and encourage a comprehensive approach to floodplain management.

Long Beach Township’s Watershed

Elements of a Watershed Management Plan

Event Month Day Year NAVD88 feet inches

Nor'easter March 6 – 8 1962 5.8 2.22 Tropical Storm Doria August 26 – 28 1971 4.4 3.34 Perfect Storm October 28 – 31 1991 6 - Nor’easter December 11 1992 6.4 2.92 Blizzard January 7 - 8 1996 4.77 0.72 Rain Event August 20 - 21 1997 4.04 13.52 Nor'easter January 28 - 29 1998 4.56 1.55 Severe Winter Coastal Storm February 4 - 8 1998 4.60 0.91 Hurricane Floyd September 16 - 18 1999 2.98 2.46 Nor'easter October 15 - 18 2009 4.77 2.50 Tropical Depression Ida & Nor’easter

November 11 - 15 2009 4.70 2.15

Hurricane Irene August - September 26 - 5 2011 4.05 7.751 Hurricane Sandy October 29 – 31 2012 6.19 6.002 Winter Storm January 2 - 3 2014 4.57 6.50S Hurricane Joaquin September – October 27 – 7 2015 3.03 3.49 Blizzard (Winter Storm Jonas) January 22 – 24 2016 3.66 10.10S Blizzard (Winter Storm Mars) February 8 2016 2.79 - Nor’easter January 23-24 2017 3.72 2.793 Nor’easter / Winter storm March 13 – 14 2017 2.95 3.30 Sustained northeast winds May 22 – 28 2017 2.59 3.06 Thunderstorm July 13 – 14 2017 1.39 1.47 Thunderstorm July 29 2017 2.03 5.41 Hurricane Jose September 18 – 23 2017 2.93 - Winter Storm Grayson January 4 2018 2.10 12.7S,4 Perigeen Blue Moon January 30 – 31 2018 2.35 0.19 Blizzard (Winter Storm Riley) March 2 – 3 2018 2.97 0.8S Nor’easter March 7 2018 3.4 2.11 /

2.50S

Table 4. Storm tide levels (NAVD88FT) and rain/snow S (inches) historical storm events “S” is snow 1) Egg Harbor Twp., 4.39 inches fell on August 27th 2) 5.29 inches fell between October 29th and 30th 3) Atlantic City Marina 4) 12.7” of snow at Atlantic City International Airport

Elements of a Watershed Management Plan

Elements of a Watershed

Management Plan

Elements of a Watershed

Management Plan

The Storm Model 2, 5, 10, & 25 or 50, & 100-year events

Elements of a Watershed

Management Plan

CRS 2017 coordinators handbook requires addressing the NOAA predicted Sea level situation for 2100 AD, at the Intermediate High Value Standard (~ +5.0 feet above current MHW in NJ). An evaluation of the existing stormwater system, discharge rates, and tidal influences is necessary. A section of community flood mitigation projects in progress, in final planning, and in concept for the future is also part of the plan. Anticipated improvements projected for the next 5-year review is expected.