2005-2006 Ponding at Shea Parkside

Last updated November 28, 2006

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Summary

It's a wrap.  The 2005-2006 ponding season concluded with some final rainfall on May 22, 2006.

The following map shows all areas of hydrologically significant ponding (at least 7 consecutive days) for the 2005-2006 season:



OC RDMD Rainfall Data - Station 219, Costa Mesa

Ponding sequences for the entire property have been highlighted in light blue.  Note that the county records rainfall totals at 8:00AM each day for the preceeding 24 hours.  Thus due to the county's time lag, they may report rainfall a day or two later than I do (I live 100 yds from the site and record my personal rainfall observations during the same calendar day that the rain actually fell).

Day
 Jul
 Aug
 Sep
 Oct
 Nov
 Dec
 Jan
 Feb
 Mar
 Apr
 May
 Jun
 Day
1





0.49

0.25

1
2





0.10




2
3





0.58




3
4







0.43


4
5








1.05

5
6








0.01

6
7







0.11


7
8











8
9











9
10




0.04





10
11



0.09


0.24


11
12







0.24


12
13











13
14











14
15





0.08

0.44

15
16











16
17


0.65







17
18


0.23



0.05


18
19











19
20

0.10








20
21

0.41



0.17
 0.24


21
22

0.02






0.45
22
23








0.26

23
24











24
25











25
26







0.02


26
27




0.05





27
28






0.98
 0.05


28
29







1.07


29
30











30
31











31
Day
 Jul
 Aug
 Sep
 Oct
 Nov
 Dec
 Jan
 Feb
 Mar
 Apr
 May
 Jun
 Day

0.00
 0.00
 0.53
 0.88
 0.09
 0.09
 1.25
 1.15
 2.45
 2.01
 0.45
 0.00


City Parcel Adjacent to the Wintersburg Channel

Ponding at this location was severely impaired after Shea used a box blade scraper to fill the area with 4 inches of soil shortly after CCC staff ecologist Dr. John Dixon issued a draft memo in December 2005 finding that wetlands were present at this location (the so-called "WP" area).



Ponding sequences for this area:

Day
 Jul
 Aug
 Sep
 Oct
 Nov
 Dec
 Jan
 Feb
 Mar
 Apr
 May
 Jun
 Day
1





0.49

0.25

1
2





0.10




2
3





0.58




3
4







0.43


4
5








1.05

5
6








0.01

6
7







0.11


7
8











8
9











9
10




0.04





10
11



0.09


0.24


11
12







0.24


12
13











13
14











14
15





0.08

0.44

15
16











16
17


0.65







17
18


0.23



0.05


18
19











19
20

0.10








20
21

0.41



0.17
 0.24


21
22

0.02






0.45
22
23








0.26

23
24











24
25











25
26







0.02


26
27




0.05





27
28






0.98
 0.05


28
29







1.07


29
30











30
31











31
Day
 Jul
 Aug
 Sep
 Oct
 Nov
 Dec
 Jan
 Feb
 Mar
 Apr
 May
 Jun
 Day

0.00
 0.00
 0.53
 0.88
 0.09
 0.09
 1.25
 1.15
 2.45
 2.01
 0.45
 0.00

Initial Rainfall = December 31, 2005 / Consecutive Days of Ponding = 14

January 1, 2006 (rain) - consec. ponding day #2
 January 3, 2006 (rain) - consec. ponding day #4
January 7, 2006 - consec. ponding day #8
 January 13, 2006 - consec. ponding day #14

City Parcel Western Agricultural Boundary

This location poses an interesting interpretation challenge this season.  Beginning in January 2006, groundwater-fed ponding appeared at the western edge of the lower agricultural area, as well as at several other locations throughout the city of Huntington Beach.  There were no significant rainstorms between mid-January and late February, so the water you see in the inital 46-day ponding sequence below is almost entirely groundwater.

In order to alleviate damage in residential areas, the city switched its water supply to 100% groundwater pumping.  This caused the Shea property ponding to dwindle noticeably by the end of February 2006.

Significant rainfall returned at the end of February 2006.  But the second ponding sequence below has exhibited greater persistence compared to previous ponding in prior seasons during the month of March.  So it is possible that groundwater is still playing at role at this location.



Ponding sequences for this area:

Day
 Jul
 Aug
 Sep
 Oct
 Nov
 Dec
 Jan
 Feb
 Mar
 Apr
 May
 Jun
 Day
1





0.49

0.25

1
2





0.10




2
3





0.58




3
4







0.43


4
5








1.05

5
6








0.01

6
7







0.11


7
8











8
9











9
10




0.04





10
11



0.09


0.24


11
12







0.24


12
13











13
14











14
15





0.08

0.44

15
16











16
17


0.65







17
18


0.23



0.05


18
19











19
20

0.10








20
21

0.41



0.17
 0.24


21
22

0.02






0.45
22
23








0.26

23
24











24
25











25
26







0.02


26
27




0.05





27
28






0.98
 0.05


28
29







1.07


29
30











30
31











31
Day
 Jul
 Aug
 Sep
 Oct
 Nov
 Dec
 Jan
 Feb
 Mar
 Apr
 May
 Jun
 Day

0.00
 0.00
 0.53
 0.88
 0.09
 0.09
 1.25
 1.15
 2.45
 2.01
 0.45
 0.00

Groundwater Ponding Start = January 12, 2006 / Consecutive Days of Ponding = 46

January 12, 2006 - consec. ponding day #1
 January 13, 2006 - consec. ponding day #2
January 14, 2006 (rain) - consec. ponding day #3
 January 15, 2006 - consec. ponding day #4
January 16, 2006 - consec. ponding day #5
 January 17, 2006 - consec. ponding day #6
January 22, 2006 - consec. ponding day #11
 January 28, 2006 - consec. ponding day #17
February 4, 2006 - consec. ponding day #24
 February 11, 2006 - consec. ponding day #31
February 17, 2006 - consec. ponding day #37
 February 20, 2006 (rain) - consec. ponding day #40
February 26, 2006 - consec. ponding day #46

Initial Rainfall = February 27, 2006 / Consecutive Days of Ponding = 85

March 2, 2006 (rain) - consec. ponding day #4
 March 5, 2006 (rain) - consec. ponding day #7
March 9, 2006 (rain) - consec. ponding day #11
 March 12, 2006 (rain) - consec. ponding day #14
March 17, 2006 - consec. ponding day #19
 March 19, 2006 (rain) - consec. ponding day #21
March 26, 2006 (rain) - consec. ponding day #28
 March 31, 2006 (rain) - consec. ponding day #33
April 2, 2006 (rain) - consec. ponding day #35
 April 5, 2006 (rain) - consec. ponding day #38
April 9, 2006 - consec. ponding day #42
 April 13, 2006 - consec. ponding day #46
April 15, 2006 (rain) - consec. ponding day #48
 April 21, 2006 - consec. ponding day #54
April 25, 2006 - consec. ponding day #58
 May 10, 2006 - consec. ponding day #73
May 21, 2006 - consec. ponding day #84
 May 22, 2006 (rain) - consec. ponding day #85

City Parcel Greenleaf Terminus



Ponding sequences for this area:

Day
 Jul
 Aug
 Sep
 Oct
 Nov
 Dec
 Jan
 Feb
 Mar
 Apr
 May
 Jun
 Day
1





0.49

0.25

1
2





0.10




2
3





0.58




3
4







0.43


4
5








1.05

5
6








0.01

6
7







0.11


7
8











8
9











9
10




0.04





10
11



0.09


0.24


11
12







0.24


12
13











13
14











14
15





0.08

0.44

15
16











16
17


0.65







17
18


0.23



0.05


18
19











19
20

0.10








20
21

0.41



0.17
 0.24


21
22

0.02






0.45
22
23








0.26

23
24











24
25











25
26







0.02


26
27




0.05





27
28






0.98
 0.05


28
29







1.07


29
30