Station No.: 324318117083101-5 017S003W01K001-5S   Agency: USGS

LOCATION.--Lat 32°43'18.68", long 117°08'31.69" referenced to North American Datum of 1983, San Diego County, CA, Hydrologic Unit is unknown, 

Balboa Park Cluster Wells consist of five continuous record groundwater wells, located in a common ground-level vault. The individual stations are:

ROAD LOG.--1: Start out going SOUTH on TECH CENTER DR toward SCRIPPS POWAY PKWY. 0.0 mi 

2: Turn LEFT onto SCRIPPS POWAY PKWY. 4.5 mi

3: SCRIPPS POWAY PKWY becomes MERCY RD. 0.0 mi

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

5. Continue onto CA-15 S - 4.4 mi

6. Take exit 2B to merge onto CA-94 W/Martin Luther King Jr Fwy - 0.5 mi

7. Take exit 1D toward 30th St - 0.2 mi

8. Turn right at Broadway - 0.7 mi

9. Turn right at 26th St - 0.7 mi

10. Turn left at Caminito Center - 141 ft

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

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 

WELL CHARACTERISTICS.--The following are originally reported versus sounded depths (as of ??/??/????); soundings are considered accurate to within 1.0 ft:

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. 

COOPERATION.--The station is operated under cooperative agreement with the City of San Diego.

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/3W-1K1          0.60
  17S/3W-1K2          0.60
  17S/3W-1K3          0.60
  17S/3W-1K4          0.60
  17S/3W-1K5          0.60

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).

Altitude of gage is

WATER LEVEL RECORD.--This cluster well site was established as a continuous monitoring site by the U.S. Geological Survey in August 2008.

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. 

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). 

DATUM.--Land-surface datum is 99.16 ft above North American Vertical Datum of 1988. Measuring point: MEASURINGPOINT.

PERIOD OF RECORD.--Water year 2008 to current year.
PERIOD OF DAILY RECORD.--August 2008 to current year.