Iii-c flood/Storm

Coast Community College District (CCCD)

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Coast Community College District (CCCD)

The northwest, coastal Orange County has great potential for flooding due to its geography and climate patterns. The patterns that will most likely impact the CCCD include:

El Niño conditions
La Nina conditions
Drought
Tropical storms
Pineapple Express patterns

In addition, northwest coastal Orange County geographical factors combine to create various types of floods including:

Alluvial
Coastal
Fluvial/Riverine
Tsunami

Orange County is in California’s South Coast Hydrologic Region. North western Orange County is in 8-1 Ground Water Basin, the Coastal Plain of Orange County which is 224,000 acres.

Thirteen of fifteen of the CCCD sites are located in the Areas C (Westminster Watershed), D (Talbert Watershed) and G (Newport Bay) on the Watersheds of the Orange County Map. The other two sites are the KOCE Transmitter in La Habra Heights, Area A and the Coastline Community College Regional One Stop Center in Irvine, Area F. The Area E – Santa Ana River runs right through the CCCD service area.

A = Coyote Creek

B = Carbon Canyon

C = Westminster

D = Talbert

E = Santa Ana River

F = San Diego Creek

G = Newport Bay

H = Los Trancos/Muddy Creek

I = Laguna Canyon

J = Aliso Creek

K = Salt Creek

L = San Juan Creek

M = Prima Deshecha/Segunda Deshecha

Figure 16 - Watersheds of Orange County

Orange County has had 18 Declared Flood Disasters from 1950 through 2009. Northwest coastal Orange County shows a 0.2% annual chance of flood hazard.
Studies comparing 2000 U.S. Census data with NFIP FIRM maps found that over 5 million Californians (15% of the population) live in FIRM-designated floodplain and nearly 2 million (5.8% of the population) live in the 100-year floodplain. Approximately 84% of the 5 million Californians living in a FIRM-designated floodplain were in13 counties having 100,000 or more people within 100-year and 500-year FIRM designated floodplains. In 2000, the leader by far, and most populated county, was Orange County with1.4 million people at risk.
Damage data from California’s historic flood events are useful for characterizing flood risk and identifying areas of high probability-based counties. Of all Declared Flood Disasters, Orange County was ranked fifth (out of a total of 57 counties in California) in the greatest dollar damage claims.
There is a sophisticated flood management system in the United States. The U.S. Congress established the National Flood Insurance Program with the passage of the National Flood Insurance Act of 1968. The NFIP is a program administered by FEMA. In California, approximately 97% of the communities participate in the NFIP. Currently there are 518 NFIP-participating communities throughout the state. With 274,683 flood insurance policies, California has the fourth largest policy count nationwide.
The NFIP has outstanding programs to help communities mitigate flood hazards including:

The Community Rating System
Flood Management Assistance
Flood Insurance Reform Act of 2004 provided a new opportunity for state governments to mitigate the most flood-prone properties by creating the Severe Repetitive Loss (SRL)

The State of California Department of Water Resources also provides services in support of the NFIP program:

Section 201.2 of 44 CFR: states that a school district is a local government. As a local government, FEMA recognizes that local governance structures vary, and that the authority to implement mitigation strategies (e.g., land use planning and zoning, building code enforcement, infrastructure improvements, floodplain management, etc.) may not reside within a single governmental entity. School districts have limited control over flood control systems; however, they can support larger mitigation projects managed by federal, state, county and/or cities. The majority of mitigation projects this plan concentrates on are assessing and flood proofing their 15 Orange County properties.
Orange County has a long and severe flood history. It has had Declared Flood Disasters in the following years since 1990: 1992, 1993, 1995 (twice), 1997, 1998, 2005 (twice) and 2010.
Over the last 100 years, the average annual rainfall in Orange County was 13.03 inches but as in most of Southern California, “average” means very little as the annual rainfall during this period has ranged from 4.35 inches in 2001-2002 to 38.2 inches in 1883-1884. This makes Orange County a land of extremes in terms of annual precipitation.

Another relatively regular source for heavy rainfall is from summer tropical storms. Tropical storms usually coincide with El Niño years. El Niño is a disruption of the ocean-atmosphere system in the tropical Pacific having important consequences for weather around the globe including Orange County. Three of some of the worst storms that have ever hit northwest, coastal Orange County were in 1983, 1997 and 1998. These were all El Niño conditions. These storms pound the coastal areas around Huntington Beach and Newport Beach particularly hard.

The majority of the CCCD facilities are located within the 100-year floodplain and the 500-year floodplain. Over the past 30 years, Orange County has worked with the federal and state governments as well as the counties of San Bernardino and Riverside to plan for, finance, received approvals and build the Santa Ana Mainstem Project. It has three segments, the Seven Oaks Dam, Prado Dam and the Lower Santa Ana River Project. Both dams protect the CCCD properties. The CCCD area benefited immensely from this entire project, particularly from the Lower Santa Ana River Project. Since its completion, northwestern Orange County has had less frequent floods and they have been less severe. This project is a perfect example of a successful joint mitigation project. Over three million people including the entire CCCD benefited from the Army Corps led project.

Thirteen of the fifteen CCCD sights are threatened by the Santa Ana River flooding (all but the KOCE Transmitter and the Coastline Irvine site.) The following CCCD facilities could be heavily impacted by a breach in the East Garden Grove-Wintersburg Channel which is under a long term construction/improvement project:
C1 - Golden West College in Huntington Beach

D1 - Coastline Community College Administrative Center in Fountain Valley

D2 - Coastline Community College Art Gallery in Huntington Beach

D4 - Coastline Community College Garden Grove Center in Garden Grove

D5 - Coastline Community College Le-Jao Center in Westminster

D8 - Coastline Community College Orange County Regional One Stop Center in Westminster

D9 - Coastline Community College Tech Center in Fountain Valley
Orange County and its cities have been proactive in mitigating flooding. The following table shows the Orange County and the Orange County cities that participate in the NFIP and the Community Rating System. The Community Rating System gives local homeowners a discount on their flood insurance if the jurisdiction meets certain standards. Orange County, Huntington Beach and Irvine are rated as 8s (15% discount) while Fountain Valley and Newport Beach are rated as 7s (10%). These jurisdictions have taken extra effort to mitigate flooding.
Table 17 - Northwestern Orange County NFIP and CRS Participants

National Flood Insurance Program (NFIP) and Community Rating System (CRS)

Jurisdiction	NFIP	CRS	CRS #	CRS Class	Flood Insurance Discount	# of CCCD Sites
Orange County	Yes	Yes	060212	7	15%	0
Costa Mesa	Yes	No	-	-	-	4
Fountain Valley	Yes	Yes	060218	8	10%	2
Garden Grove	Yes	No	-	-	-	1
Huntington Beach	Yes	Yes	065034	7	15%	2
Newport Beach	Yes	Yes	060227	8	10%	2
Irvine	Yes	Yes	060222	8	15%	1
Westminster	Yes	No	-	-	-	2

Reviewing the HAZAS flood scenarios, the “education” buildings are 0.7% of the building stock. For the Study Region there is $1.8 billion in exposure and for the Flood Scenarios there is just over $400 million exposure.

List of CCCD Sites – Recent Flood Impact History
Some sites were not opened yet. This is an estimation of how hard the area was hit by the flood.

Identi-fier	Site Name	Feb-1992 FEMA 935	Jan-1993 FEMA 979	Jan-1995 FEMA 1044	Feb-1995 FEMA 1046	Feb-1998 FEMA 1203	Jan-2003 FEMA 1377	Mar- 2003 FEMA 1585	Feb-2005 FEMA 1577	Feb- 2005 FEMA 1585	Mar-2010 FEMA 1952
A1*	College District Office, CM	Low	Low	Low	Low	Low	Low	Low	Low	Low	Low
A2	KOCE Transmitter La Habra Heights	None	None	None	None	None	None	None	None	None	None
A3*	Transportation Facility, CM	Low	Low	Low	Low	Low	Low	Low	Low	Low	Low
B1*	Orange Coast College, CM	Low	Low	Low	Low	Low	Low	Low	Low	Low	Low
B2	Orange Coast Sailing Ctr, NB	Low	Low	Low	Low	Low	Low	Low	Low	Low	Low
C1*	Golden West College, HB	Med	Med	Med	High	Med	Med	Med	Med	Med	Med
D1*	Coastline Administrative Center, FV	Med	Med	Med	Med	Med	Med	Med	Med	Med	Med
D2	Coastline Art Gallery, HB	Med	Med	Med	Med	Med	Med	Med	Med	Med	Med
D3	Coastline Costa Mesa Center, CM	Low	Low	Low	Low	Low	Low	Low	Low	Low	Low
D4*	Coastline Garden Grove Ctr, GG	Low	Low	Low	Low	Low	Low	Low	Low	Low	Low
D5	Coastline Le-Jao Center Westminster	Med	Med	Med	Med	Med	Med	Med	Med	Med	Med
D6	Coastline Newport Bch Center, NB	Low	Low	Low	Low	Low	Low	Low	Low	Low	Low
D7	Coastline OC Regional One Stop-Irvine	Low	Low	Low	Low	Low	Low	Low	Low	Low	Low
D8	Coastline OC Regional One Stop Center-Wm	Med	Med	Med	Med	Med	Med	Med	Med	Med	Med
D9	Coastline Tech Center, FV	Med	Med	Med	Med	Med	Med	Med	Med	Med	Med

Table 18 - List of CCCD Sites – Flood Elevation & Potential Impact Rankings

Identifier	Site Name	Owned or Leased	Elevation (in feet)	100-Year	100-Year w/o Levee	500-Year
A1*	College District Office Costa Mesa	Owned	79	Med	Med	Med
A2	KOCE Transmitter La Habra Heights	Owned	1165	Low	Low	Low
A3*	Transportation Facility Costa Mesa,	Owned	66	Med	Med	Med
B1*	Orange Coast College Costa Mesa	Owned	59	Med	Med	Med
B2	Orange Coast Sailing Center, Newport Beach	Owned	56	Med	High	High
C1*	Golden West College, HB	Owned	12	High	High	High
D1*	Coastline Administrative Center, FV	Owned	49	High	High	High
D2	Coastline Art Gallery, HB	Owned	23	High	High	High
D3	Coastline Costa Mesa Center, Costa Mesa	Leased	62	Med	Med	Med
D4*	Coastline Garden Grove Center, GG	Owned	102	Low	Med	Med
D5	Coastline Le-Jao Center Westminster	Owned	49	High	High	High
D6	Coastline Newport Beach Center NB	Owned	112	Low	Low	Low
D7	Coastline OC Regional One Stop-Irvine	Leased	249	Low	Low	Low
D8	Coastline OC Regional One Stop Center-Wm	Leased	49	High	High	High
D9	Coastline Tech Center Fountain Valley	Leased	52	Med	High	High

Table 19 - CCCD Flood (3 Scenarios) Damage Estimates by Site

Identifier	Site Name	Asset Count	Total Square Footage	Total Replacement Cost	100-Year 5.5% Damage	100-Year w/o Levee 6.5% Damage	500-Year 5% Damage
A1	Coast Community College District Office	4	73,892	29,762,830	1,636,956	1,934,584	1,488,142
A2	KOCE Transmitter	2	1,749	1,332,000	73,260	86,580	66,600
A3	Transportation Facility	1	7,712	2,439,200	134,156	158,548	121,960
B1	Orange Coast College	158	942,869	324,736,020	17,860,481	21,107,841	16,236,801
B2	Orange Coast College Sailing Center	2	11,569	3,751,040	206,307	243,818	187,552
C1	Golden West College	86	652,890	232,811,780	12,804,648	15,132,766	11,640,589
D1	Coastline Administrative Center, FV	2	61,505	21,437,100	1,179,041	1,393,412	1,071,855
D2	Coastline Art Gallery	1	3,283	131,300	7,222	8,535	6,565
D3	Coastline Costa Mesa Center, CM	15	27,577	736,400	40,502	47,866	36,820
D4	Coastline GG Center, GG	1	48,000	22,829,000	1,255,595	1,483,885	1,141,450
D5	Coastline Le-Jao Center	3	28,067	10,598,900	582,940	688,929	529,945
D6	Coastline Newport Beach Center, NB				0	0	0
D7	Coastline Regional Center Irvine	1	21,420	646,700	35,569	42,036	32,335
D8	Coastline Regional Center, Westminster	1	24,992	693,000	38,115	45,045	34,650
D9	Coastline Tech Center, FV	1		1,7000,000	93,500	110,500	85,000
TOTALS				651,905,270	35,854,790	42,373,843	32,595,264

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