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 Naval Base (17S/2W-20F1-5)

Station No.: 324055117064401-5 017S002W20F001-5S Agency: USGS

LOCATION.--Lat 32°40'55.51", long 117°06'44.67" referenced to North American Datum of 1983, San Diego County, CA, Hydrologic Unit is unknown, in semi-fenced paved parking lot directly east of guard shack at the Main Street/Division Street gate.

ROAD LOG.--From the Poway Field Office:

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 SOUTH via the ramp on the LEFT. 11.2 miles

5: I-15 S becomes CA-15 S. 6.6 miles

6: Take the MAIN ST exit toward NATIONAL CITY BL. 0.4 miles

8: From the stoplight at the end of the Main St. exit ramp cross Main St. and proceed straight ahead to Naval Base gate. You MUST show a valid Government ID and be in a vehicle with US Government license plates to be allowed to enter the base. If the sentry at the gate does not recognize your government ID tell the sentry a copy of the USGS ID is in the approved ID book in the guard shack. If attempting to enter in a vehicle without government plates you may be directed by the sentry to the "Pass & ID" office to obtain a tempory vehicle permit.

9: After being granted entry make an immediate left turn after the guard shack and proceed straight to the end of chain link fence on the left side of the road. Make a left turn into paved parking lot on left. Well vault is located in paved parking lot maked with 4 yellow metal corner posts.

Vault is located in semi-fenced paved parking lot directly east of guard shack at the Main St. / Division St. gate. Vault is marked by four yellow metal corner posts. The vault doors are secured with a standard USGS 2640 lock.

ESTABLISHMENT AND HISTORY.--This cluster well site was established as a continuous monitoring site by the U.S. Geological Survey in October 12, 2006.

GAGE.--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).

Altitude of gage is 10ft, 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-20F1           1501                1500

17S/2W-20F2           1501                 680

17S/2W-20F3           1501                 200

17S/2W-20F4           1501                  85

17S/2W-20F5           1501                  25

State well number	USGS station number	Hole depth (ft)	Perforation depth (ft)	Casing size and type	Date drilled
17S/2W-20F1	324055117064401	1501	1460-1500	3" PVC	7/24/2006
17S/2W-20F2	324055117064402	1501	660-680	2" PVC	7/24/2006
17S/2W-20F3	324055117064403	1501	180-200	2" PVC	7/24/2006
17S/2W-20F4	324055117064404	1501	80-85	2" PVC	7/24/2006
17S/2W-20F5	324055117064405	1501	20-25	2" PVC	7/24/2006

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. above/below LSD (ft)
17S/2W-20F1          0.23 blw

17S/2W-20F2          0.03 blw

17S/2W-20F3          0.07 abv

17S/2W-20F4          0.46 blw

17S/2W-20F5          0.27 abv

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).

Altitude of gage is 10ft, from topographic map.

WATER LEVEL RECORD.--This cluster well site was established as a continuous monitoring site by the U.S. Geological Survey in October 12, 2006.

Water-level record is complete for the entire 2009 WY with the exception of Sep. 15, which is missing in all 5 wells due to a partial day record.

WATER LEVEL CORRECTIONS.--Corrections to recorded water levels were applied throughout the year. Twelve manual water level measurements were made during WY 2008. 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 from the final correction of WY 2008 to the beginning 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.

U.S. DEPARTMENT OF THE INTERIOR - U.S. GEOLOGICAL SURVEY - WATER RESOURCES


                      STATION:324055117064401  017S002W20F001S  TYPE:WELL  AGENCY:USGS   STATE:06  COUNTY:073
        LATITUDE: 324055.51  LONGITUDE: 1170644.67 NAD83  WELL DEPTH:    1500  GEOLOGIC UNIT:          DATUM:   12.25 NAVD88
                                            Date Processed: 2010-09-14 15:26 By gposberg


                                                         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 13:20:00 PDT   A                                  1.00    -0.04
       DRIFT. NOT RESET.



    1 2008/10/07 15:40:00 PDT   A                                  1.00    -0.02
       DRIFT. NO RESET.
    2 2008/10/29 13:39:00 PDT   A                                  1.00    -0.03
       DRIFT. NO RESET.
    3 2008/12/03 16:05:00 PST   A                                  1.00    -0.07
    4 2009/02/05 13:21:00 PST   A                                  1.00     0.07
    5 2009/04/17 12:40:00 PDT   A                                  1.00     0.05
    6 2009/06/04 14:00:00 PDT   A                                  1.00     0.04
    7 2009/07/02 13:00:00 PDT   A                                  1.00     0.03
    8 2009/08/10 14:40:00 PDT   A                                  1.00     0.03
    9 2009/09/15 11:35:00 PDT   A                                  1.00     0.00



 NXT: 2009/10/19 12:05:00 PDT   L                                  1.00     0.01


Well#2
        
 U.S. DEPARTMENT OF THE INTERIOR - U.S. GEOLOGICAL SURVEY - WATER RESOURCES


                      STATION:324055117064402  017S002W20F002S  TYPE:WELL  AGENCY:USGS   STATE:06  COUNTY:073
        LATITUDE: 324055.51  LONGITUDE: 1170644.67 NAD83  WELL DEPTH:     680  GEOLOGIC UNIT:          DATUM:   12.25 NAVD88
                                            Date Processed: 2010-09-14 15:29 By gposberg


                                                         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 13:28:00 PDT   A                                  1.00     0.08
       DRIFT. NOT RESET.



    1 2008/10/07 15:58:00 PDT   A                                  1.00     0.07
       DRIFT. NOT RESET.
    2 2008/10/29 13:37:00 PDT   A                                  1.00     0.09
       DRIFT. NOT RESET.
    3 2008/12/03 16:08:00 PST   A                                  1.00     0.11
    4 2009/02/05 13:30:00 PST   A                                  1.00     0.11
    5 2009/04/17 12:45:00 PDT   A                                  1.00     0.07
    6 2009/06/04 14:05:00 PDT   A                                  1.00     0.09
    7 2009/07/02 13:05:00 PDT   A                                  1.00     0.09
    8 2009/08/10 14:45:00 PDT   A                                  1.00    -0.01
    9 2009/09/15 11:30:00 PDT   A                                  1.00     0.12



 NXT: 2009/10/19 12:10:00 PDT   L                                  1.00     0.12


  Well #3
        U.S. DEPARTMENT OF THE INTERIOR - U.S. GEOLOGICAL SURVEY - WATER RESOURCES


                      STATION:324055117064403  017S002W20F003S  TYPE:WELL  AGENCY:USGS   STATE:06  COUNTY:073
        LATITUDE: 324055.51  LONGITUDE: 1170644.67 NAD83  WELL DEPTH:     200  GEOLOGIC UNIT:          DATUM:   12.25 NAVD88
                                            Date Processed: 2010-09-14 15:31 By gposberg


                                                         CORRECTION CURVES                                                          
 Correction set #1   Instrument Drift                     2009 Water Year             


                                                 
                STARTS         AGE           ENDS                INPUT    CORR.      INPUT    CORR.      INPUT    CORR.
      ------------------------ --- --------------------------   -------  -------    -------  -------    -------  -------
 PRV: 2008/09/02 13:33:00 PDT   A                                  1.00     0.07
       DRIFT. NOT RESET.



    1 2008/10/07 15:45:00 PDT   A                                  1.00     0.14
       DRIFT. NOT RESET.
    2 2008/10/29 13:43:00 PDT   A                                  1.00     0.06
       DRIFT. NOT RESET.
    3 2008/12/03 16:10:00 PST   A                                  1.00     0.17
    4 2009/02/05 13:41:00 PST   A                                  1.00     0.17
    5 2009/04/17 12:50:00 PDT   A                                  1.00     0.15
    6 2009/06/04 14:10:00 PDT   A                                  1.00     0.10
    7 2009/07/02 13:10:00 PDT   A                                  1.00     0.13
    8 2009/08/10 14:50:00 PDT   A                                  1.00     0.08
    9 2009/09/15 11:35:00 PDT   A                                  1.00     0.15



 NXT: 2009/10/19 12:15:00 PDT   L                                  1.00     0.16


 Well #4
 U.S. DEPARTMENT OF THE INTERIOR - U.S. GEOLOGICAL SURVEY - WATER RESOURCES


                      STATION:324055117064404  017S002W20F004S  TYPE:WELL  AGENCY:USGS   STATE:06  COUNTY:073
        LATITUDE: 324055.51  LONGITUDE: 1170644.67 NAD83  WELL DEPTH:      85  GEOLOGIC UNIT:          DATUM:   12.25 NAVD88
                                            Date Processed: 2010-09-14 15:34 By gposberg


                                                         CORRECTION CURVES                                                          
 Correction set #1   Instrument Drift                     2009 Water Year     
    
                                                                         
                STARTS         AGE           ENDS                INPUT    CORR.      INPUT    CORR.      INPUT    CORR.
      ------------------------ --- --------------------------   -------  -------    -------  -------    -------  -------
 PRV: 2008/09/02 13:38:00 PDT   A                                  1.00     0.11
       DRIFT. NOT RESET.



    1 2008/10/07 15:50:00 PDT   A                                  1.00     0.05
       DRIFT. NOT RESET.
    2 2008/10/29 14:00:00 PDT   A                                  1.00     0.15
       DRIFT. NOT RESET.
    3 2008/12/03 16:12:00 PST   A                                  1.00     0.13
    4 2009/02/05 13:50:00 PST   A                                  1.00     0.15
    5 2009/04/17 12:55:00 PDT   A                                  1.00     0.18
    6 2009/06/04 14:15:00 PDT   A                                  1.00     0.22
    7 2009/07/02 13:15:00 PDT   A                                  1.00     0.23
    8 2009/08/10 14:50:00 PDT   A                                  1.00     0.21
    9 2009/09/15 11:40:00 PDT   A                                  1.00     0.22



 NXT: 2009/10/19 11:20:00 PDT   L                                  1.00     0.21
                
Well #5
                             U.S. DEPARTMENT OF THE INTERIOR - U.S. GEOLOGICAL SURVEY - WATER RESOURCES


                      STATION:324055117064405  017S002W20F005S  TYPE:WELL  AGENCY:USGS   STATE:06  COUNTY:073
        LATITUDE: 324055.51  LONGITUDE: 1170644.67 NAD83  WELL DEPTH:      25  GEOLOGIC UNIT:          DATUM:   12.25 NAVD88
                                            Date Processed: 2010-09-14 14:21 By rspatter


                                                         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 13:44:00 PDT   A                                  1.00    -0.02
       DRIFT. NOT RESET.



    1 2008/10/07 15:54:00 PDT   A                                  1.00    -0.03
       DRIFT. NOT RESET.
    2 2008/10/29 14:06:00 PDT   A                                  1.00     0.02
       DRIFT. NOT RESET.
    3 2008/12/03 16:14:00 PST   A                                  1.00     0.02
    4 2009/02/05 13:55:00 PST   A                                  1.00    -0.01
    5 2009/04/17 13:00:00 PDT   A                                  1.00     0.02
    6 2009/06/04 14:16:00 PDT   A                                  1.00     0.03
    7 2009/07/02 13:20:00 PDT   A                                  1.00     0.02
    8 2009/08/10 14:55:00 PDT   A                                  1.00    -0.01
    9 2009/09/15 11:45:00 PDT   A                                  1.00     0.02



 NXT: 2009/10/19 12:25:00 PDT   L                                  1.00     0.06

DATUM.--Land-surface datum is 12.25 ft above North American Vertical Datum of 1988. Measuring point: MEASURINGPOINT.

PERIOD OF RECORD.--Water year 2006 to current year.
PERIOD OF DAILY RECORD.--October 2006 to current year.

State well number	USGS station number	Intermittent Water-level	Daily water-level
17S/2W-20F1	324055117064401	07-24-2006 to present	10/2006 to present
17S/2W-20F2	324055117064402	07-24-2006 to present	10/2006 to present
17S/2W-20F3	324055117064403	07-24-2006 to present	10/2006 to present
17S/2W-20F4	324055117064404	07-24-2006 to present	10/2006 to present
17S/2W-20F5	324055117064405	07-24-2006 to present	10/2006 to present

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