COMPLIANCE MONITORING PROGRAM
You are visitor number
This resource page is presented to provide agencies and the general
public with information on monitoring locations, available data, research
studies and announcements related to the Grasslands Bypass Project in the
San Joaquin Valley of California.
(last updated 7/27/99)
Monitoring Sites and Current Database
Location of monitoring sites
Images of primary monitoring sites and current data. Primary sites are
those monitoring sites essential to meeting the goals of the monitoring
program (Note: the gif files will take some time to load).
A : Grasslands
Bypass (Check 17)
B : Grasslands
Bypass (north of Gun Club Road)
Mud Slough upstream of Grasslands Bypass discharge.
Mud Slough at USGS gage.
: Mud Slough at Highway 140.
: Salt Slough at Highway 165
: San Joaquin River at Fremont Ford.
: San Joaquin River upstream of Merced River.
I : Mud Slough : Seasonal backwater tributary.
Camp 13 Canal (north of Main Canal)
: Agatha Canal at Mallard Road.
San Luis Canal (at Henry Miller Road).
: Santa Fe Canal (at Henry Miller Road).
San Joaquin River at Crows Landing Bridge.
Panoche Creek at I-5 Bridge.
Images of selected secondary monitoring sites and existing data. Secondary
sites are those monitoring sites that are not essential to meeting the
goals of the monitoring program but may provide useful background data.
(Note: the gif files will take some time to load).
summary reports prepared by the San Francisco Estuary Institute. (First
report available December 1996).
documents and tables including ecological risk guidelines and drainage
selenium load targets.
Scientific studies and investigations
SAN LUIS DRAIN DYE STUDY : Members of the Data Reporting Team for the Grasslands
Bypass project conducted a dye study to determine drainage residence time
in the Grasslands Bypass channel and the San Luis Drain and to observe
the degree of longitudinal dispersion within this reach. Longitudinal dispersion
affects the ability to match water quality samples between upstream and
downstream sites - important for selenium mass balance studies.
MUD SLOUGH DYE STUDY : A second dye study was conducted within Mud Slough
to determine the degree of mixing that occurs within the channel segment
downstream of the confluence with the San Luis Drain and the downstream
Mud Slough monitoring site (Site D) The Mud
Slough dye study shows good mixing between the sites for the flow conditions
during the experiment as demonstrated by the similarity in dye concentrations
between idepth integrated samples taken a three equally spaced locations
across the flow.
MICROBIAL ECOLOGY OF AGRICULTURAL DRAINAGE : Professor Terrance Leighton,
Dr Nigel Quinn and a team of graduate, undergraduate snd postdoctoral students
at UC Berkeley and Lawrence Berkeley National Laboratory have conducted
a series of unique experiments to assess the selenium bioremediation potential
of bacteria in natural
and engineered ecosystems in the Grasslands Basin. The systems studied
include the Agatha Canal (a wetland supply canal previously used to convey
drainage water), the San Luis Drain (both before and after the start of
the Grasslands Bypass Project on September 23, 1996) and the Panoche Treatment
system (a joint UCB/LBNL project to demonstrate the potential of an algal-bacterial
selenium removal system to reduce selenium loads in agricultural drainwater).
SELENIUM VOLATILIZATION STUDY : Dr Teresa Fan and Dr Rick Higashi (both
at UC Davis) and two French scientists, Dr David Amouroux and Dr Herve
Pinaly, from the Laboratoire de Chimie Bio-Inorganique and Environment
tested a new method for measuring selenium volatilization forms and flux
at two full-scale evaporation basins located in the Tulare Lake Drainage
District and the Lost Hills Drainage District. These experiments were designed
to field-validate laboratory evidence of selenium volatilization from algae
isolate from each of these facilities. Of particular interest were the
volatile species of selenium produced by the algae. On September 6, 1998
the research team, together with Dr Nigel Quinn (Lawrence Berkeley National
Laboratory, measured selenium
volatilization flux from the San Luis Drain at Site B. Preliminary
analysis of the data confirms the presence of di-methyl selenide (DMSe)
in the air above the drainage water at all sites with the TLDD site producing
higher DMSe concentrations in both water and air than the LHDD and San
Luis Drain sites. Experimental results are published in a report entitled
situ volatilization and form measurements at San Joaquin Valley evaporation
basins: by T.W-M. Fan and R.M. Higashi, Jan 1999. This pdf file requires
PANOCHE TREATMENT PLANT : An Algal-Bacterial Treatment Facility has been
operated for the past two years in the Panoche Water District as a cooperative
demonstration program between the University of California, Berkeley, Lawrence
Berkeley National Laboratory and the Panoche Drainage District. The first
phase of the project was funded by a US Bureau of Reclamation Challenge
Grant - continuing work is being funded by CALFED. The
Phase 1 project report describes the construction of the plant and
initial experiments conducted to achieve consistent selenium load reduction.
Real-time flow and water quality data and forecasts
SJRMP Water Quality Subcommittee : Review
of real-time flow and water quality forecasts made during the past
year for Vernalis on the San Joaquin River.
SJRMP Water Quality Subcommittee - Flow,
stage and water quality : in the San Joaquin River (past 14 days).
This information is published weekly on the SJRWQOP bulletin board and
is obtained from CDEC. WARNING : This data is preliminary and subject to
CDEC Real-time water quality at Vernalis - Vernalis
EC. Note this data is preliminary and subject to error.
CDEC Real-time hourly stage data at selected stations - San
Joaquin River stage data. Note this data is preliminary and subject
in the Grasslands Basin
California Rivers Assessment (CARA)
Panoche Water District Newsletter
Real-time weather in Northern California from the National Weather Service.
Obtain current (satellite
imagery) or current (radar
imagery). This data is used by the NWS to forecast (precipitation).
If you are connected to a network connection or have a fast modem connection
to the internet you can also view an (animation)
of the current satellite data.
The Panoche Water District publishes a newsletter called the Panoche
Fan which provides news of local actions to improve drainage management.
The water districts covered are Panoche, Mercy Springs, Eagle Field and
The URL for this page is:
This page developed and maintained by:
Nigel W.T. Quinn
Lawrence Berkeley National Laboratory
1 Cyclotron Road, 70A-3317K
Berkeley, CA 94720
Please E-mail any comments to firstname.lastname@example.org