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San Diego Hydrogeology

Welcome to the U.S. Geological Survey (USGS) San Diego Hydrogeology project website. This site provides hydrologic data collected or compiled by the USGS in the San Diego area; some additional data may be available from the USGS database National Water Information System (NWIS).

Project Chief: Wes Danskin
Phone: 619-225-6132
Email: wdanskin@usgs.gov

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Site Description for El Toyon Park (17S/2W-16Q9-13)

Station No.: 324116117050801-5 017S002W16Q009-13S   Agency: USGS
LOCATION.--Lat 32°41'16.12", long 117°05'08.23" referenced to North American Datum of 1983, San Diego County, CA, Hydrologic Unit is unknown, along North edge of park near curb, directly across the street from 2305 East 1st Street, National City.
ROAD LOG.--
1: Start out going NORTH on TECH CENTER DR toward SCRIPPS POWAY PKWY. 0.1 miles

2: Turn LEFT onto SCRIPPS POWAY PKWY. 4.4 miles

3: SCRIPPS POWAY PKWY becomes MERCY RD. <0.1 miles

4: Merge onto I-15 S via the ramp on the LEFT. 11.2 miles

5: I-15 S becomes CA-15 S. 2.6 miles

6: Merge onto I-805 S. 3.8 miles

7: Take the PALM AVE exit toward NATIONAL CITY. 0.3 miles

8: Turn RIGHT onto PALM AVE. 0.2 miles

9: Turn LEFT onto E DIVISION ST. 0.5 miles

10: Turn RIGHT onto EUCLID AVE. <0.1 miles

11: Turn RIGHT onto E 1ST ST. <0.1 miles

12: End at 2305 E 1st St, National City, CA 91950-2047, US. Well cluster is located along North edge of park near curb, directly across the street from 2305 E. 1st. St. 
ESTABLISHMENT AND HISTORY.--This cluster well site was established as a continuous monitoring site by the U.S. Geological Survey in December 21, 2005. 
GAGE.--Instrumentation consists of a Design Analysis H500XL data logger transmitting through a Design Analysis SE-300 GOES HDR transmitter (DCP), five In-Situ model Level Troll 500 non-vented pressure transducers, and one In-Situ model Baro Troll 500 barometer. A rechargeable 12-volt battery and solar panel provides power. Instruments are housed in a subterranean concrete and steel vault (with a USGS 2640 lock). A 3/4" socket wrench is also required to open the vault doors.

Altitude of gage is 109ft, from topographic map. 
WELL CHARACTERISTICS.--The following are originally reported versus sounded depths (as of ??/??/????); soundings are considered accurate to within 1.0 ft:

                  Drilled               Casing
Well No.          depth (ft)            depth (ft)
  17S/2W-16Q9           1308             1300
17S/2W-16Q10 1308 960
17S/2W-16Q11 1308 760
17S/2W-16Q12 1308 430
17S/2W-16Q13 1308 170
State well number USGS station number Hole depth (ft) Perforation depth (ft) Casing size and type Date drilled
17S/2W-16Q9 324116117050801 1430 1260-1300 2" PVC 7/15/2003
17S/2W-16Q10 324116117050802 1430 920-960 2" PVC 7/15/2003
17S/2W-16Q11 324116117050803 1430 740-760 2" PVC 7/15/2003
17S/2W-16Q12 324116117050804 1430 410-430 2" PVC 7/15/2003
17S/2W-16Q13 324116117050805 1430 150-170 2" PVC 7/15/2003
ACCURACY.--Records are rated good to excellent, provided the sensor/cable assemblies do not slip. 
COOPERATION.--This station is operated under cooperative agreement with the Sweetwater Authority. 
MEASURING POINT.--The current MPs for all wells is the top of the 2-inch PVC casing. The MP elevations for each well are as follows:

Well No.          MP Elev. below LSD (ft)  17S/2W-16Q9           0.92
17S/2W-16Q10 0.82
17S/2W-16Q11 0.68
17S/2W-16Q12 0.99
17S/2W-16Q13 0.86
All wells are located in a main vault, and each well is identified (casing and cap) by number

EQUIPMENT.--Instrumentation consists of a Design Analysis H500XL data logger transmitting through a Design Analysis SE-300 GOES HDR transmitter (DCP), five Insitu model Level Troll 500 non-vented pressure transducers, and one Insitu model Baro Troll 500 barometer. A rechargeable 12-volt battery and solar panel provides power. Instruments are housed in a subterranean concrete and steel vault (with a USGS 2640 lock). A 3/4" socket wrnech is also required to open the vault doors.

Altitude of gage is 109ft, from topographic map. 

WATER LEVEL RECORD.--This cluster well site was established as a continuous monitoring site by the U.S. Geological Survey in December 21, 2005. The 2009 Water Year record is complete and usable for all wells in this cluster except for the following periods:

July 1 - 2: Recorder failure caused only partial data to be collected on these days.

This period totals 2 days or 0.5% of the water year. 

WATER LEVEL CORRECTIONS.--Corrections to recorded water levels were applied throughout the year. Ten manual water level measurements were made during WY 2009. These benchmark measurements, generally made monthly, provided a reference water level for correcting recorded data. Generally, corrections were prorated from measurement to measurement, except where noted. Corrections were carried forward through the beginning of WY 2010, and the final corrections of WY 2008 were prorated to the first corrections of WY 2009. 

The variations in corrections from measurement to measurement may be due to (1) frequent and rapid fluctuations in water level during manual measurements of water level (observed by the technician), and (2) movement of the cable/sensor assembly during measurements and inspections. Final daily values are reported as depth below land surface datum (ft), daily instantaneous observation at 1200 hrs (statistical code 31200). 

See the ADAPS correction table below for additional information on corrections applied during the year.

WELL #1


                      STATION:324116117050801  017S002W16Q009S  TYPE:WELL  AGENCY:USGS   STATE:06  COUNTY:073
        LATITUDE: 324116.12  LONGITUDE: 1170508.23 NAD83  WELL DEPTH:    1300  GEOLOGIC UNIT:          DATUM:  109.36 NAVD88
                                             Date Processed: 2010-03-16 15:03 By sdsax
 
                                                         CORRECTION CURVES                                                          
 Correction set #1   Instrument Drift                     2009 Water Year                                                           
                                                  DD 1, WaterLevel, BelowLSD (ft)                                                   
                STARTS         AGE           ENDS                INPUT    CORR.      INPUT    CORR.      INPUT    CORR.
      ------------------------ --- --------------------------   -------  -------    -------  -------    -------  -------
 PRV: 2008/09/02 10:47:00 PDT   A                                  1.00    -0.05
       DRIFT. NOT RESET.
 
 
    1 2008/10/07 14:17:00 PDT   A                                  1.00    -0.07
       DRIFT. NO RESET.
    2 2008/10/28 13:38:00 PDT   A                                  1.00    -0.05
       DRIFT. NO RESET.
    3 2008/12/04 10:03:00 PST   A                                  1.00    -0.06
       DRIFT. NO RESET.    4 2009/01/30 11:38:00 PST   A                                  1.00    -0.07
       NO RESET.
    5 2009/03/06 11:15:00 PST   A                                  1.00    -0.07
       NO RESET.
    6 2009/04/02 11:40:00 PDT   A                                  1.00    -0.04
       NO RESET.
    7 2009/05/13 12:05:00 PDT   A                                  1.00    -0.11
       NO RESET.
    8 2009/07/01 12:30:00 PDT   A                                  1.00    -0.06
       NO RESET.
    9 2009/08/10 12:00:00 PDT   A                                  1.00    -0.05
       NO RESET.
   10 2009/09/10 13:55:00 PDT   A                                  1.00    -0.05
 
 
 NXT: 2009/10/07 12:50:00 PDT   L                                  1.00    -0.05





WELL #2
                      STATION:324116117050802  017S002W16Q010S  TYPE:WELL  AGENCY:USGS   STATE:06  COUNTY:073
        LATITUDE: 324116.12  LONGITUDE: 1170508.23 NAD83  WELL DEPTH:     960  GEOLOGIC UNIT:          DATUM:  109.36 NAVD88
                                             Date Processed: 2010-03-16 15:04 By sdsax
 
                                                         CORRECTION CURVES                                                          
 Correction set #1   Instrument Drift                     2009 Water Year                                                           
                                                  DD 1, WaterLevel, BelowLSD (ft)                                                   
                STARTS         AGE           ENDS                INPUT    CORR.      INPUT    CORR.      INPUT    CORR.
      ------------------------ --- --------------------------   -------  -------    -------  -------    -------  -------
 PRV: 2008/09/02 10:53:00 PDT   A                                  1.00     0.13
       DRIFT. NOT RESET.
 
 
    1 2008/10/07 14:27:00 PDT   A                                  1.00     0.09
       DRIFT. NOT RESET.
    2 2008/10/28 13:42:00 PDT   A                                  1.00     0.13
       DRIFT. NOT RESET.
    3 2008/12/04 10:08:00 PST   A                                  1.00     0.09
    4 2009/01/30 11:43:00 PST   A                                  1.00     0.09
    5 2009/03/06 11:20:00 PST   A                                  1.00     0.10
    6 2009/04/02 11:45:00 PDT   A                                  1.00     0.08
    7 2009/05/13 12:10:00 PDT   A                                  1.00     0.08
    8 2009/07/01 12:35:00 PDT   A                                  1.00     0.09
    9 2009/08/10 12:05:00 PDT   A                                  1.00     0.09
   10 2009/09/10 14:05:00 PDT   A                                  1.00     0.12
 
 
 NXT: 2009/10/07 12:50:00 PDT   L                                  1.00     0.10
 





WELL #3
                      STATION:324116117050803  017S002W16Q011S  TYPE:WELL  AGENCY:USGS   STATE:06  COUNTY:073
        LATITUDE: 324116.12  LONGITUDE: 1170508.23 NAD83  WELL DEPTH:     760  GEOLOGIC UNIT:          DATUM:  109.36 NAVD88
                                             Date Processed: 2010-03-16 15:05 By sdsax
 
                                                         CORRECTION CURVES                                                          
 Correction set #1   Instrument Drift                     2009 Water Year                                                           
                                                  DD 1, WaterLevel, BelowLSD (ft)                                                   
                STARTS         AGE           ENDS                INPUT    CORR.      INPUT    CORR.      INPUT    CORR.
      ------------------------ --- --------------------------   -------  -------    -------  -------    -------  -------
 PRV: 2008/09/02 11:02:00 PDT   A                                  1.00     0.11
       DRIFT. NOT RESET.
 
 
    1 2008/10/07 14:32:00 PDT   A                                  1.00     0.17
       DRIFT. NOT RESET.
    2 2008/10/28 13:45:00 PDT   A                                  1.00     0.19
       DRIFT. NOT RESET.
    3 2008/12/04 10:12:00 PST   A                                  1.00     0.17
    4 2009/01/30 11:52:00 PST   A                                  1.00     0.16
    5 2009/03/06 11:25:00 PST   A                                  1.00     0.16
    6 2009/04/02 11:50:00 PDT   A                                  1.00     0.15
    7 2009/05/13 12:15:00 PDT   A                                  1.00     0.15
    8 2009/07/01 12:40:00 PDT   A                                  1.00     0.16
    9 2009/08/10 12:07:00 PDT   A                                  1.00     0.17
   10 2009/09/10 14:10:00 PDT   A                                  1.00     0.18
 
 
 NXT: 2009/10/07 13:00:00 PDT   L                                  1.00     0.20


WELL #4
                      STATION:324116117050804  017S002W16Q012S  TYPE:WELL  AGENCY:USGS   STATE:06  COUNTY:073
        LATITUDE: 324116.12  LONGITUDE: 1170508.23 NAD83  WELL DEPTH:     430  GEOLOGIC UNIT:          DATUM:  109.36 NAVD88
                                             Date Processed: 2010-03-16 15:06 By sdsax
 
                                                         CORRECTION CURVES                                                          
 Correction set #1   Instrument Drift                     2009 Water Year                                                           
                                                  DD 1, WaterLevel, BelowLSD (ft)                                                   
                STARTS         AGE           ENDS                INPUT    CORR.      INPUT    CORR.      INPUT    CORR.
      ------------------------ --- --------------------------   -------  -------    -------  -------    -------  -------
 PRV: 2008/09/02 11:07:00 PDT   A                                  1.00     0.05
       DRIFT. NOT RESET.
 
 
    1 2008/10/07 14:39:00 PDT   A                                  1.00     0.04
       DRIFT. NOT RESET.
    2 2008/10/28 13:48:00 PDT   A                                  1.00     0.05
       DRIFT. NOT RESET.
    3 2008/12/04 10:18:00 PST   A                                  1.00     0.03
    4 2009/01/30 11:54:00 PST   A                                  1.00     0.00
    5 2009/03/06 11:30:00 PST   A                                  1.00     0.02
    6 2009/04/02 11:55:00 PDT   A                                  1.00     0.01
    7 2009/05/13 12:20:00 PDT   A                                  1.00     0.03
    8 2009/07/01 12:45:00 PDT   A                                  1.00     0.01
    9 2009/08/10 12:10:00 PDT   A                                  1.00     0.03
   10 2009/09/10 14:15:00 PDT   A                                  1.00     0.05
 
 
 NXT: 2009/10/07 13:05:00 PDT   L                                  1.00     0.04


WELL#5
                      STATION:324116117050805  017S002W16Q013S  TYPE:WELL  AGENCY:USGS   STATE:06  COUNTY:073
        LATITUDE: 324116.12  LONGITUDE: 1170508.23 NAD83  WELL DEPTH:     170  GEOLOGIC UNIT:          DATUM:  109.36 NAVD88
                                             Date Processed: 2010-03-16 15:07 By sdsax
 
                                                         CORRECTION CURVES                                                          
 Correction set #1   Instrument Drift                     2009 Water Year                                                           
                                                  DD 1, WaterLevel, BelowLSD (ft)                                                   
                STARTS         AGE           ENDS                INPUT    CORR.      INPUT    CORR.      INPUT    CORR.
      ------------------------ --- --------------------------   -------  -------    -------  -------    -------  -------
 PRV: 2008/09/02 11:16:00 PDT   A                                  1.00     0.07
       DRIFT. NOT RESET.
 
 
    1 2008/10/07 14:45:00 PDT   A                                  1.00     0.08
       DRIFT. NOT RESET.
    2 2008/10/28 13:50:00 PDT   A                                  1.00     0.11
       DRIFT. NOT RESET.
    3 2008/12/04 10:23:00 PST   A                                  1.00     0.08
    4 2008/12/24 11:19:00 PST   A                                  1.00    -0.04
       REPLECED PROBE.
    5 2009/01/30 11:58:00 PST   A                                  1.00     0.00
       DOWNLOADED DATA.
    6 2009/03/06 11:35:00 PST   A                                  1.00     0.03
    7 2009/04/02 12:00:00 PDT   A                                  1.00     0.04
    8 2009/05/13 12:25:00 PDT   A                                  1.00     0.00
    9 2009/07/01 12:50:00 PDT   A                                  1.00     0.01
   10 2009/08/10 12:15:00 PDT   A                                  1.00     0.03
   11 2009/09/10 14:20:00 PDT   A                                  1.00     0.06
 
 
 NXT: 2009/10/07 13:10:00 PDT   L                                  1.00     0.04

        
WELL CHARACTERISTICS (MANU).--Depth 1,300 ft. Upper casing diameter UPPERCASINGDIAMETER; top of first opening OPENTOPVALUE, bottom of last opening OPENBOTTOMVALUE. 
DATUM.--Land-surface datum is 109.36 ft above North American Vertical Datum of 1988. Measuring point: MEASURINGPOINT. 
PERIOD OF RECORD.--Water year 2003 to current year.
PERIOD OF DAILY RECORD.--December 2005 to current year.

Table added by krmcpher 2/17/2011
State well number USGS station number Intermittent water-level Daily water-level
17S/2W-16Q9 324116117050801 09/12/2003 to present yes
17S/2W-16Q10 324116117050802 09/12/2003 to present yes
17S/2W-16Q11 324116117050803 09/15/2003 to present yes
17S/2W-16Q12 324116117050804 09/12/2003 to present yes
17S/2W-16Q13 324116117050805 09/11/2003 to present yes

Questions about San Diego Hydrogeology? Please contact Wes Danskin (email: wdanskin@usgs.gov or send a letter). 619.225.6132

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