Site Description for Sweetwater (17S/2W-28R4-9)
| Station No.: 323932117050801-5 017S002W28R004-9S Agency: USGS Revised By: unknown Date Revised: unknown (revision history) LOCATION.--Lat 32°39'32.58", long 117°05'08.09" referenced to North American Datum of 1983, in NW 1/4 SW 1/4 SW 1/4 sec.28, T.17 S., R.2 W., San Diego County, CA, Hydrologic Unit is unknown, |
| Revised By: zbarry Date Revised: 4/19/2011 (revision history) ESTABLISHMENT AND HISTORY.--This cluster well site was established as a continuous monitoring site by the U.S. Geological Survey in December 2009. |
| Revised By: zbarry Date Revised: 4/19/2011 (revision history) GAGE.--Instrumentation consists of a Design Analysis H500XL data logger transmitting through a Design Analysis SE-300 GOES HDR transmitter (DCP), six 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 wrench is also required to open the vault doors. |
| Revised By: rgfay Date Revised: 5/18/2011 (revision history) WELL CHARACTERISTICS.--The USGS well site is located within 500 ft of three Reynolds Desalination Facility production wells (SDF6, SDF1, SDF2). Water levels in all six observation wells may be affected by pumping and injection. USGS observation wells #1 and #2 (deepest wells) are least affected. USGS well #3 is in a fine-grained unit and may respond to pumping and injection. USGS well #4 is perforated in a production zone. USGS wells #5 and #6 are affected by surface water (estuary). Well #1 is artesian. |
| Revised By: zbarry Date Revised: 4/19/2011 (revision history) ACCURACY.--Records are rated good to excellent, provided the sensor/cable assemblies do not slip or are not damaged/disturbed during measuring/sampling activities in the vault. |
| Revised By: zbarry Date Revised: 4/19/2011 (revision history) COOPERATION.--The station is operated under cooperative agreement with the Sweetwater Authority. |
| Revised By: zbarry Date Revised: 4/19/2011 (revision history) WATER LEVEL MEASUREMENTS.--Water level measurements on Well #1 should be done with a calibrated pressure gage. For wells #2-6, a calibrated electric tape should be used. |
| Revised By: rspatter Date Revised: 6/8/2011 (revision history) MEASURING POINT.--The current MPs for well #1 is the top of the concrete on the west side of the vault. Wells #2 through #6 is the top of the metal ring on the 2-inch PVC casing. The MP elevations for each well are as follows: Well No. MP Elev. below LSD (ft) 17S/2W-28R4 0.30All wells are located in a main vault, and each well is identified (casing and cap) by number. |
| Revised By: zbarry Date Revised: 4/20/2011 (revision history) EQUIPMENT.--Instrumentation consists of a Design Analysis H350XL 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). Water levels are obtained using a calibrated electrical tape and calibrated pressure gage. |
| Revised By: rgfay Date Revised: 5/18/2011 (revision history) HYDROLOGIC CONDITIONS.--The USGS well site is located within 500 ft of three Reynolds Desalination Facility production wells (SDF6, SDF1, SDF2). Water levels in all six observation wells may be affected by pumping and injection. USGS observation wells #1 and #2 (deepest wells) are least affected. USGS well #3 is in a fine-grained unit and may respond to pumping and injection. USGS well #4 is perforated in a production zone. USGS wells #5 and #6 are affected by surface water (estuary). Well #1 is artesian. |
| Revised By: rspatter Date Revised: 6/8/2011 (revision history) WATER LEVEL RECORD.--Real-time continuous monitoring since December 2009, in cooperation with Sweetwater Water Authority. Water-level data collected at 15-minute intervals and reported as "Depth Below LSD" and "Water level, NAVD". PROCEDURE Water-level check mesurements are made according to USGS standard procedures. Measurements recorded using a handheld PDA with the MONKES program. The files are then stored in GWSI and archived. Continuous data are corrected to field measurements and prorated from visit to visit. DATA CORRECTIONS Refer to RMS section or ADAPS. DATA ANOMOLIES AND MISSING DATA Refer to RMS for each individual period worked. Computed By: Zach Barry Date: 05/17/2011 Checked By: Date: Reviewed By: R. Fay Date: 05/17/2011 |
| Revised By: rgfay Date Revised: 4/26/2011 (revision history) WATER LEVEL CORRECTIONS.--Continuous data corrected to field measurements and prorated from visit to visit. |
| Revised By: kengelki Date Revised: 7/26/2010 (revision history) WELL CHARACTERISTICS (MANU).--Depth 1,990 ft. Upper casing diameter UPPERCASINGDIAMETER; top of first opening OPENTOPVALUE, bottom of last opening OPENBOTTOMVALUE. |
| Revised By: kengelki Date Revised: 7/26/2010 (revision history) DATUM.--Land-surface datum is 17.4 ft above North American Vertical Datum of 1988. Measuring point: MEASURINGPOINT. |
| Revised By: rspatter Date Revised: 6/7/2011 (revision history) PERIOD OF RECORD.--Water year 2010 to current year. |
| Revised By: rspatter Date Revised: 6/7/2011 (revision history) PERIOD OF DAILY RECORD.--December 2009 to current year. |
LOCATION: Latitude 32°39'32.58", longitude -117°05'08.09" (NAD83) in San Diego County, California. Well is located just off I-805 and Sweetwater Rd. near south National City, California.
SITE INFORMATION: Land-surface altitude is 13 feet above mean sea level (NGVD29) from 1:24000 scale topographic map.
INSTRUMENTATION: Unknown.
WATER-LEVEL RECORD: The period of record for intermittent and daily water-level measurements is listed below.
| State well number | USGS station number | Intermittent Water-level | Daily water-level |
|---|---|---|---|
| 17S/2W-28R4 | 323932117050801 | 10/2009 to present | yes |
| 17S/2W-28R5 | 323932117050802 | 10/2009 to present | yes |
| 17S/2W-28R6 | 323932117050803 | 10/2009 to present | yes |
| 17S/2W-28R7 | 323932117050804 | 10/2009 to present | yes |
| 17S/2W-28R8 | 323932117050805 | 10/2009 to present | yes |
WATER-LEVEL MEASUREMENTS:
MEASURING POINT:
TOPOGRAPHIC MAP: National City, scale 1:24000
COOPERATION: Sweetwater Authority
| State well number | USGS station number | Hole depth (ft) | Perforation depth (ft) | Casing size and type | Date drilled |
|---|---|---|---|---|---|
| 17S/2W-28R4 | 323932117050801 | 2006 | 1810-1850 | 3" PVC | 8/12/2009 |
| 17S/2W-28R5 | 323932117050802 | 2006 | 1300-1320 | 2" PVC | 8/12/2009 |
| 17S/2W-28R6 | 323932117050803 | 2006 | 960-980 | 2" PVC | 8/12/2009 |
| 17S/2W-28R7 | 323932117050804 | 2006 | 540-560 | 2" PVC | 8/12/2009 |
| 17S/2W-28R8 | 323932117050805 | 2006 | 170-190 | 2" PVC | 8/12/2009 |
| 17S/2W-28R9 | 323932117050806 | 2006 | 45-65 | 2" PVC | 8/12/2009 |
ROAD LOG: Key intersection is the intersection of Interstate Highway 5 and Highway Route 94 about near downtown San Diego. Directions are given from Interstate Highway 5 south towards National City.
| Mileage | Description |
|---|---|
| 5.3 | Take Interstate Highway 5 south to Highway 54 east. |
| 1.2 | Take Highway 54 east to Highland Ave./4th Ave. Turn left onto Highland Ave. |
| 0.4 | Take 1st right onto 30th St. E |
| 0.4 | Take 1st right onto 2nd Ave. |
| 0.1 | Well is located at the Richard A. Reynolds Desalination Facilty at 3066 N 2nd Ave., Chula Vista, CA on the right. The vault is behind the main building, over a bridge and through gate. |
Questions about San Diego Hydrogeology? Please contact Wes Danskin (email: wdanskin@usgs.gov or send a letter). 619.225.6132
