Table 2.1 Summary of Past and Current Water Quality and Sediment Monitoring

CATEGORY AND LOCATION

AGENCY

STATION

Water

Water, Se

START / END

MULTIPLE USES

P

San Luis Drain

CRWQCB

MER534

W

W

W

W

W

Aug 96 -

Timing of initial filling and release

at Check 17 north-west of Russell Ave

USBR/GWTF

SLD_A

Selenium loss during operation

* STATION A

USBR

SLD18D

Q

Mar 96 -

Sediment volume and Se conc.

P

San Luis Drain

CRWQCB

MER535

W

W

D

W

W

Aug 96 -

Compliance monitoring

at footbridge between Gun Club

USBR/LBNL

SLD_B

C

C

Aug 96 -

Timing of initial filling and release

Road and terminus

USBR

SLD2C

Q

Mar 96 -

Selenium loss during operation

* STATION B

Sediment volume and Se conc

P

Mud Slough

CVRWQCB

MER536

W

W

W

W

W

Jul 89 -

Project impact

at confluence of drainage from

USFWS

Q

Jan 88 -

S Lake (below Skeleton Weir)

USBR

Q

Aug 93 - Feb 94

* STATION C

P

Mud Slough

CVRWQCB

MER542

W

W

W

W

W

Sep 81 -

Compliance monitoring

at the San Luis Drain, near Gustine

USBR / USGS

262900

C

C

C

Sep 91 -

Real-time water management

* STATION D

GWTF

GL19a

M

M

M

Jan 89 -

Project impact

USFWS

Q

Jan 88 -

Sediment volume and Se conc

USBR

Q

Aug 93 - Feb 94

P

Mud Slough

CVRWQCB

MER551

BM

BM

BM

BM

Mar 96 -

Project impact

at Highway 140 bridge.

USBR

Q

Aug 93 - Feb 94

Sediment volume and Se conc

* STATION E

USGS

BM

BM

Mar 96 -

P

Salt Slough

CVRWQCB

MER531

W

W

W

W

W

Sep-81 -

Compliance monitoring

at Lander Avenue (near Stevinson)

USBR / USGS

261100

C

C

C

Sep-91 -

Real-time water management

* STATION F

GWTF

GL-22/22a

M

M

M

Sep-81 -

Project impact

DWR

B00470

C

Oct 68 -

Sediment volume and Se conc

USFWS

Q

Jan-88 -

P

San Joaquin River

CVRWQCB

MER538

W

W

W

W

W

Sep 85 -

Project impact

at Fremont Ford

GWTF

GL20-E

M

M

M

Sep 85 - Mar 93

* STATION G

DWR

B07375

M

A2

May 84 -

USBR

SJR140

M

M

M

Feb-82 -

P

San Joaquin River upstream of the

CVRWQCB

STC512

W

W

W

W

W

Oct 85 -

Project impact

Merced River

GWTF

GL-21-E

Oct 85 - Apr 92

* STATION H

Page 1 of 8

CATEGORY AND LOCATION

AGENCY

STATION

Water

Water, Se

START / END

MULTIPLE USES

* = Proposed Sites

(CURRENT)

ID

Flow

Temp

pH

EC

TOT

TSS

B

BED

OF RECORD

OF DATA

P

Mud Slough

CVRWQCB

B

B

B

B

B

Project impact

seasonal backwater tributary

USFWS

A

Jan-89 -

Sediment Se conc

* STATION I

P

Camp 13 Canal

CVRWQCB

MER505

W

W

W

W

W

Nov 85 -

Project impact

north of Main Canal

GWTF

GL-3/3a

D

D

M

M

Mar 93 -

* STATION J

USBR

DSAGWD1

M

M

M

Mar 84 - Sep 86

P

Agatha Canal

CVRWQCB

MER506

W

W

W

W

W

Nov 85 -

Project impact

at Mallard Road

LBNL

ACN-E

Q

Jan 93 - Oct 95

Sediment volume and Se conc

* STATION K

GWTF

USBR

GL-5a

DSAGWD14

D

D

M

M

M

M

M

Nov 82 -

Mar 85 - Jun 86

P

San Luis Canal

CVRWQCB

MER532

W

W

W

W

W

Nov 85 -

Project impact

at Henry Miller Road

GWTF

GL-37

D

D

M

M

Oct 85 -

* STATION L

USBR

M

M

M

Jul 84 - Sep 86

P

Santa Fe Canal

GWTF

GL-25

D

D

M

M

Oct 85 -

Project impact

at Henry Miller Road

CVRWQCB

MER519

W

W

W

W

W

Sep 81 -

* STATION M

USBR

M

M

M

Jul 84 - Sep 86

P

San Joaquin River

GWTF

GL-21a-E

M

M

M

Apr 89 - Mar 93

Compliance monitoring

below Crows Landing Bridge

CVRWQCB

STC504

W

W

W

D

W

Jan 95 -

Real-time water management

* STATION N

USBR / USGS

C

C

C

Nov 95 -

S

Los Banos Creek

CVRWQCB

MER554

M

M

M

M

M

Nov 85 -

Trend

at location of Highway 140

GWTF

GL-18

W

M

Nov 85 -

S

Mud Slough

GWTF

GL-19s-E

M

M

M

Oct 85 - Jan 93

Trend

at Highway 140 bridge downstream

from San Luis Drain outlet

(Changed to Proposed Station E)

S

Mud Slough

CVRWQCB

MER552

M

M

M

M

M

Nov 85 -

Trend

at Newman Gun Club

S

San Joaquin River

CVRWQCB

MER522

W

W

W

W

W

Nov 85 -

Trend

at Lander Avenue

USGS

260815

C

C

Sep 91 - Oct 93

Operations

DWR

B07400

C

C

M

TA

S

Boundary Drain

CVRWQCB

MER521

M

M

M

M

M

Jan 85 -

Trend

at Fish and Game pumping station

GWTF

SL-2

W

M

A2

M

Jan 85 -

S

City Drain

GWTF

GL-23

B

Jan 85 -

Trend

at location of Mud Slough

Page 2 of 8

CATEGORY AND LOCATION

AGENCY

STATION

Water

Water, Se

START / END

MULTIPLE USES

* = Proposed Sites

(CURRENT)

ID

Flow

Temp

pH

EC

TOT

TSS

B

BED

OF RECORD

OF DATA

S

Garzas Creek

GWTF

CCID-1a

W

M

Q

M

Nov 85 -

Trend

at Verdi (Worthy) weir

S

Mueller Weir

GWTF

SL-17

W

M

Q

M

Jun 85 -

Trend

S

Salt Slough

GWTF

SL-1

W

M

Q

M

Jan 85 -

Trend

in the low water channel

S

Salt Slough

CVRWQCB

MER528

M

M

M

M

M

Jan 85 -May 87

Trend

at Hereford Road

W

W

W

W

W

Jun 87 - Sep 88

S

San Luis Canal

GWTF

GL-24/24a

M

Nov 85 -

Trend

below San Luis/Santa Fe split

USBR

SFC101

M

M

M

Jun 84 -Jul 84

(San Luis spillway)

S

San Luis Creek

GWTF

GL-11

W

M

M

Nov 85 -

Trend

at Ingomar Grade

S

Mud Slough (south) at

GWTF

GL-9-E

M

Nov 85 - Dec 86

Trend

Highway 152

USBR

MSL152

M

M

M

Mar 85 -Sep 86

S

Mud Slough (south) downstream

GWTF

GL-26-E

M

M

M

Sep 85 - Jan 93

Trend

of City Drain

S

Salt Slough at Wolfsen Road

GWTF

GL-22-E

M

M

M

Oct 85 - July 87

Trend

1.0 mile east of Highway 165

S

Santa Fe Canal at Gun Club Road

GWTF

GL-14-E

M

M

M

Jan 85 - Oct 85

Trend

USBR

SFCGCR

M

M

M

Jul 84 - Aug 86

S

Santa Fe Canal at Highway 152

GWTF

GL-8-E

Nov 85 - Nov86

Trend

USBR

DASGWD9

M

M

M

Jul 84 - Aug 86

S

Santa Fe Canal - Mud Slough Diversion

GWTF

GL25s1-E

A

Sep 85 - Apr 94

Trend

at Henry Miller Road

Bypass 21 + 30

S

Santa Fe Canal - Mud Slough Diversion

GWTF

GL-25s3-E

A

Sep 85 - Apr 94

at Henry Miller Road

Bypass 61 + 05

S

Santa Fe Canal - Mud Slough Diversion

GWTF

GL-25s4-E

A

Sep 86 - Apr 94

Trend

at Henry Miller Road

Bypass 122 + 00

Page 3 of 8

CATEGORY AND LOCATION

AGENCY

STATION

Water

Water, Se

START / END

MULTIPLE USES

* = Proposed Sites

(CURRENT)

ID

Flow

Temp

pH

EC

TOT

TSS

B

BED

OF RECORD

OF DATA

S

Santa Fe Canal - Mud Slough Diversion

GWTF

GL-25s5-E

A

A

Sep 85 - Apr 94

Trend

at Henry Miller Road

Bypass 140 + 00

S

San Luis Canal

CVRWQCB

MER527

W

W

W

W

W

Nov 85 -

Project impact

at Highway 152

GWTF

CCID-5/5a

W

M

A2

M

Feb 87-

USBR

DSAGWD8

M

M

M

Jul 84 - Sep 86

S

Westside Ditch at Santa Fe Grade

GWTF

GL-17-E1

M

Nov 85 -

Trend

0.5 miles south of Lone Tree

USBR

WSDSFG

M

M

M

Jul 84 - Aug 86

S

Mud Slough at Gun Club Road

GWTF

GL-15-E

M

Nov 85 - Jan 87

Trend

upstream from the Fremont Canal

USBR

MSLGCR

M

M

M

May 84 - May 89

S

Eagle Ditch at Gun Club Road

GWTF

GL-13-E

M

Nov 85 - Jan 87

Trend

USBR

EDGCR

M

M

M

Nov 84 -Mar 86

S

Fremont Canal at Gun Club Road

GWTF

GL-16-E

M

Nov 85 - Jan 87

Trend

north side of road

USBR

FREMSL

M

M

M

Jan 85 - Mar 89

S

Johnson Field Drain at Henry

GWTF

CCID-3-E

M

Nov 85 - Jan 87

Trend

Miller Road

S

Los Banos Creek at Henry Miller

GWTF

CCID-2-E

M

Q

Q

Nov 85 - July 89

Trend

Road

S

Mexican Drain at Henry Miller

GWTF

CCID-4-E

M

Nov 85 - Jan 87

Trend

Avenue

Agatha Canal inlet drain

CVRWQCB

MER552

Nov 85 - Oct 90

Trend

GWTF

AG1

LBNL

ACS

D

W

W

W

W

W

W

Dec-93 - Jan 95

Agatha Canal

GWTF

GL-5

B

M

M

M

Nov 85 -

Trend

1.0 miles north of Main Canal

Almond Drive Drain

CVRWQCB

MER555

M

M

M

M

M

Nov 85 -

Trend

at location of Main Canal

GWTF

CCID-6

W

M

A2

M

Nov 84 -

Broadview Drain

GWTF

BV-3

C

M

M

M

May 84 -

Trend

CCID Main Canal

CVRWQCB

MER510

M

M

M

M

M

Jun-87,

Trend

Russell Avenue

Jun 91 - Oct 92

California Aqueduct

GWTF

GL-31-E

M

Q

Q

Q

Dec 85 - May 92

Trend

at Check 13 (near Hwy 207)

Page 4 of 8

CATEGORY AND LOCATION

AGENCY

STATION

Water

Water, Se

START / END

MULTIPLE USES

* = Proposed Sites

(CURRENT)

ID

Flow

Temp

pH

EC

TOT

TSS

B

BED

OF RECORD

OF DATA

Charleston Drain

CVRWQCB

MER502

M

M

M

M

M

Nov 85 -

Trend

at location of Main Canal

GWTF

GL-2-E

M

M

M

M

Jan 87 - Dec 88

CVRWQCB

MER502

M

M

M

M

M

Jun 91 -

Charleston Drain

GWTF

CH-1

D

M

M

M

Dec 84 -

Trend

at location of Gadwall Canal

Colony Branch #2

GWTF

GL-6-E

M

Q

Nov 85 - Jun 92

Trend

Colony Branch # 3

GWTF

CCID-8-E

Q

A

Nov 85 - May 92

Trend

at weir, west of Swift Road

Delta Mendota Canal

GWTF

GL-32-E

M

Q

Q

Q

Dec 85 - May 92

Trend

at Check 13 (near Hwy 207)

Main Drain (Firebaugh)

CVRWQCB

MER556

M

M

M

M

M

Mar 87 -

Trend

Russell Blvd.

GWTF

FC-5

C

M

M

M

Mar 87 -

CVRWQCB

MER556

W

W

W

W

W

Jun 91 -

Pacheco Outlet on Hamburg Drain

CVRWQCB

MER504

M

M

M

M

M

May 84 -

Trend

between Main and Outside Canals

GWTF

PO-1

D

M

M

M

May 84 -

CVRWQCB

MER504

W

W

W

W

W

Jun 91-

Panoche Drain at O'Banion

CVRWQCB

MER501

M

M

M

M

M

July 84 -

Trend

Agatha Canal

GWTF

PE-14

C

C

M

M

July 84 -

MER501

W

W

W

W

W

Jun 91-

Rice Drain

CVRWQCB

MER509

M

M

M

M

M

Apr 85 -

Trend

at Grassland boundary

GWTF

PCC-1

W

M

M

Apr 85 -

CVRWQCB

MER509

W

W

W

W

W

Jun 91 -

Agatha Canal at Britto Road,

GWTF

GL-7-E

Nov 85 - Dec 86

Trend

north of Santa Fe Grade

USBR

DASGWD12

M

M

M

Aug 84 - Aug 86

CCID Main Canal diversion at

GWTF

GL-29-E

M

M

M

M

Nov 85 - Dec 87

Trend

Ascot Ditch

CCID Main Canal diversion at Silva

GWTF

GL-30-E

M

M

M

M

Nov 85 - Feb 87

Trend

Ditch

Page 5 of 8

CATEGORY AND LOCATION

AGENCY

STATION

Water

Water, Se

START / END

MULTIPLE USES

* = Proposed Sites

(CURRENT)

ID

Flow

Temp

pH

EC

TOT

TSS

B

BED

OF RECORD

OF DATA

Cotton Drain at Terceira Road

GWTF

GL-10-E

M

M

M

M

Nov 85 - Jun 87

Trend

Firebaugh Drain at Desjardins

GWTF

DJ-1-E

M

M

M

M

Oct 85 - Dec 93

Trend

Firebaugh Drain near Santa-Fe

GWTF

FC-1-E

M

M

M

M

Nov 84 - Apr 89

Trend

Grade

Firebaugh Drain West of

GWTF

FC-2-E

M

M

M

Nov 84 - May 85

Trend

Crooked Drain

Firebaugh Drain West of

GWTF

FC-3-E

M

M

M

Oct 85 - Jul 88

Trend

Crooked Drain

Gadwall Ditch at Almond Drive

GWTF

GL-1-E

M

M

M

M

Jan 85 - Dec 86

Trend

Ditch

USBR

DSAGWD05

Jensen and Brandi Drain at

GWTF

JEN-1E-1

M

M

M

M

Nov 85 - Oct 89

Trend

Almond Drive Ditch

Main Drain at Camp 13

GWTF

FC-4-E

M

M

M

M

Nov 84 - Feb 87

south side of Main Canal

Trend

Fremont Canal

USBR

NF

NF

NF

NF

Jan 85 - Jun 89

Trend

between Pond 6 and Gun Club Road

Mud Slough

USBR

NF

NF

NF

NF

Jan 85 - Jun 89

Trend

north of Gun Club Road

Mendota Pool

GWTF

GL-33-E

M

M

M

M

Oct 85 - Jun 92

Trend

at location of Mobray Bridge

Merced River

USBR/USGS

272500

C

C

C

Jan 96 -

Real - time water management

near Stevinson

Page 6 of 8

CATEGORY AND LOCATION

AGENCY

STATION

Water

Water, Se

START / END

MULTIPLE USES

* = Proposed Sites

(CURRENT)

ID

Flow

Temp

pH

EC

TOT

TSS

B

BED

OF RECORD

OF DATA

San Joaquin River

USGS

274000

C

C

C

Oct 85 -

near Newman

DWR

B07300

(EC and temperature measured

approximately 0.5 mi. downstream)

San Joaquin River

CVRWQCB

STC507

W

W

W

W

W

Oct 93 -

at Patterson

DWR

B07200

C

M

A2

Oct 61 -

USGS

274570

C

C

San Joaquin River

CVRWQCB

STC511

Oct 92 - Nov 92

Trend

at Grayson

DWR

M

A2

San Joaquin River

CVRWQCB

STC510

W

W

W

W

W

Oct 93 -

Trend

at Maze Blvd

DWR

B07040-E

C

C

M

A2

Oct 61 -

Stansilaus River

USGS

303000

C

C

C

Trend

at Ripon

Stanislaus River

DWR

B03115-E

C

C

Oct 61 -

Trend

at Koetitz Ranch

San Joaquin River

CVRWQCB

SLC501

W

W

W

W

W

Oct 92 -

Trend

at Vernalis

USBR/USGS

303500

C

C

C

DWR

B07020

C

C

C

Tuolomne River

USGS

290000

C

C

C

Trend

at Modesto

DWR

B04120

C

C

C

Tuolomne River

DWR

B04105

C

Trend

at Tuolomne City