1997-1998 Ponding at Shea Parkside

Last updated February 15, 2004

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Summary

The following map shows the most frequent ponding areas for this season:


OC PFRD Rainfall Data - Station 170, Los Alamitos

The EIR uses rainfall data from OC PFRD Station 170 in Los Alamitos.  Ponding sequences for the entire property have been highlighted in light blue.

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




0.37
0.21
0.54

1
2






0.04
0.07

2
3






0.40



3
4






1.03



4
5





0.11

0.05

5
6




1.88

0.29
0.05
6
7




0.23
0.40



7
8






0.91



8
9




0.08
 0.06
 0.35



9
10





0.72




10
11



0.08
0.07




11
12








0.50

12
13



0.06
0.09


0.55
13
14



0.83


0.94


14
15






1.33



15
16











16
17






1.17



17
18











18
19




1.14
 0.14




19
20






0.72



20
21




0.28





21
22






0.53



22
23






0.28



23
24






1.19



24
25











25
26







1.13


26
27



0.62






27
28







0.15


28
29











29
30





0.49




30
31





0.02




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

N/A
 N/A
 N/A
 0.00
 1.59
 3.98
 1.70
 8.56
 2.51
 1.16
 0.60
 N/A

City Parcel Arena East Site

This area exhibited large quantities of the wetland indicator plant species brass buttons (Cotula coronopifolia, FACW+) during the 2002-2003 rainy seasons.


Ponding sequences for this area:

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




0.37
0.21
0.54

1
2






0.04
0.07

2
3






0.40



3
4






1.03



4
5





0.11

0.05

5
6




1.88

0.29
0.05
6
7




0.23
0.40



7
8






0.91



8
9




0.08
 0.06
 0.35



9
10





0.72




10
11



0.08
0.07




11
12








0.50

12
13



0.06
0.09


0.55
13
14



0.83


0.94


14
15






1.33



15
16











16
17






1.17



17
18











18
19




1.14
 0.14




19
20






0.72



20
21




0.28





21
22






0.53



22
23






0.28



23
24






1.19



24
25











25
26







1.13


26
27



0.62






27
28







0.15


28
29











29
30





0.49




30
31





0.02




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

N/A
 N/A
 N/A
 0.00
 1.59
 3.98
 1.70
 8.56
 2.51
 1.16
 0.60
 N/A

Initial Rainfall = December 6, 1997 / Consecutive Days of Ponding = 138

December 7, 1997 (rain) - consec. ponding day #2
 December 13, 1997 (rain) - consec. ponding day #8
December 18, 1997 - consec. ponding day #13
 December 22, 1997 (rain) - consec. ponding day #17
January 6, 1998 (rain) - consec. ponding day #32
 January 12, 1998 (rain) - consec. ponding day #38
January 14, 1998 (rain) - consec. ponding day #40
 January 18, 1998 - consec. ponding day #44
January 21, 1998 (rain) - consec. ponding day #47
 February 1, 1998 (rain) - consec. ponding day #58
February 5, 1998 (rain) - consec. ponding day #62
 February 10, 1998 (rain) - consec. ponding day #67
February 16, 1998 (rain) - consec. ponding day #73
 February 19, 1998 (rain) - consec. ponding day #76
February 26, 1998 (rain) - consec. ponding day #83
 March 29, 1998 (rain) - consec. ponding day #114
April 18, 1998 (rain) - consec. ponding day #134
 April 22, 1998 - consec. ponding day #138

Initial Rainfall = May 6, 1998 / Consecutive Days of Ponding = 9+

May 6, 1998 (rain) - consec. ponding day #1
 May 14, 1998 (rain) - consec. ponding day #9

City Parcel Arena West Site

This area exhibited large quantities of the wetland indicator plant species salt sandspurry (Spergularia marina, OBL) during the 2002-2003 and 2003-2004 rainy seasons.


Ponding sequences for this area:

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




0.37
0.21
0.54

1
2






0.04
0.07

2
3






0.40



3
4






1.03



4
5





0.11

0.05

5
6




1.88

0.29
0.05
6
7




0.23
0.40



7
8






0.91



8
9




0.08
 0.06
 0.35



9
10





0.72




10
11



0.08
0.07




11
12








0.50

12
13



0.06
0.09


0.55
13
14



0.83


0.94


14
15






1.33



15
16











16
17






1.17



17
18











18
19




1.14
 0.14




19
20






0.72



20
21




0.28





21
22






0.53



22
23






0.28



23
24






1.19



24
25











25
26







1.13


26
27



0.62






27
28







0.15


28
29











29
30





0.49




30
31





0.02




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

N/A
 N/A
 N/A
 0.00
 1.59
 3.98
 1.70
 8.56
 2.51
 1.16
 0.60
 N/A

Initial Rainfall = January 10, 1998 / Consecutive Days of Ponding = 11

January 15, 1998 (rain) - consec. ponding day #6
 January 17, 1998 - consec. ponding day #8
January 20, 1998 (rain) - consec. ponding day #11

Initial Rainfall = January 30, 1998 / Consecutive Days of Ponding = 28

February 1, 1998 (rain) - consec. ponding day #3
 February 4, 1998 (rain) - consec. ponding day #6
February 10, 1998 (rain) - consec. ponding day #12
 February 16, 1998 (rain) - consec. ponding day #18
February 19, 1998 (rain) - consec. ponding day #21
 February 26, 1998 (rain) - consec. ponding day #28

Former County Parcel Palm Tree Wetland


Ponding sequences for this area:

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




0.37
0.21
0.54

1
2






0.04
0.07

2
3






0.40



3
4






1.03



4
5





0.11

0.05

5
6




1.88

0.29
0.05
6
7




0.23
0.40



7
8






0.91



8
9




0.08
 0.06
 0.35



9
10





0.72




10
11



0.08
0.07




11
12








0.50

12
13



0.06
0.09


0.55
13
14



0.83


0.94


14
15






1.33



15
16











16
17






1.17



17
18











18
19




1.14
 0.14




19
20






0.72



20
21




0.28





21
22






0.53



22
23






0.28



23
24






1.19



24
25











25
26







1.13


26
27



0.62






27
28







0.15


28
29











29
30





0.49




30
31