Sunrise stranding pool1 year monitoring reportSunrise stranding pool

1 year monitoring report

Tim HornerCSUS Geology Department

SACRAMENTOSTATE

Problem:Problem:

• Fry migrated onto floodplain during high spring flows

• Flows receded

• Pool was disconnected from main channel at flows < 3000 cfs

• 1000's of fry were trapped, overheated, eaten

Isolation pool:river mile 19.7

Site location:Site location:

Sunrise Blvd.

From: Sacramento County American River Parkway Map

• Concept: 2004

• Purpose: Low budget remediation of stranding pool (identified in RCMP)

• Construction: 10/1/05

• Sponsored by:• Water Forum, SAFCA, BOR, California Fly Fishers Unlimited, Fly Fishers of Davis, Granite Bay Fly Casters, Sacramento County, CSUS Geology Dept. Philip Williams and Associates

• Monitoring: CSUS

Project history:Project history:

• Connect stranding pool to the main channel

• Maintain connection at flows > 2000 cfs

• Connecting channel specs:• 4' wide• 1' deep

Project goals:Project goals:

Methods:Methods:

Bucket and shovel

Bobcat

Backhoe

• Questions:• effectiveness of volunteers• durability of project

• 11/2/05: initial measurements

• 12/20/06: 1 year update

• Measurements:• Perimeter shape and position • Width • Depth• Water temperature• Grain size

Post-project monitoring:Post-project monitoring:SACRAMENTO

STATE

20062005

River discharge:River discharge:

2007

Construction date 11/2/05

monitoring12/20/06 monitoring

35,000 cfs max. outflow

From: http://cdec.water.ca.gov

Measurements:Measurements:

Length and width (tape measure)

Depth (cross sections)

Grain size (pebble counts)

Measurements:Measurements:

Walked perimeter with GPS

Installed temperature loggers

Temperature logger in pond

12-20-06 1950 cfs

11-3-05 2050 cfs

Pond perimeter:Pond perimeter:

Pond depth:Pond depth:

November 2005 longitudinal cross section (2050 cfs)

December 2006 longitudinal cross section (1950 cfs)

Pond width:Pond width:

November 2005 lateral cross section (2050 cfs)

December 2006 lateral cross section (1950 cfs)

Connecting channel:Connecting channel:

November 2005 connecting channel cross section (2050 cfs)

December 2006 connecting channel (1950 cfs)

Pond temperature:Pond temperature:

Sunrise Pool (Downstream Temperature Logger)

05

101520253035404550

Jul-06 Aug-06 Oct-06 Dec-06

Tem

pera

ture

(Deg

rees C

elc

ius)

010002000300040005000600070008000900010000

Dis

ch

arg

e (

cfs

)

Air Temp Temp 2 Discharge

Sunrise Pool (Upstream Temperature Logger)

05

101520253035404550

Jul-06 Aug-06 Oct-06 Dec-06

Tem

pera

ture

(Deg

rees C

elc

ius)

010002000300040005000600070008000900010000

Dis

ch

arg

e (

cfs

)

Air Temp Temp 1 Discharge

Pond temperature:Pond temperature:Sunrise Pool (Downstream Temperature Logger)

05

101520253035404550

8/26 8/31 9/5 9/10 9/15 9/20 9/25

Tem

pera

ture

(Deg

ree

s C

elc

ius)

010002000300040005000600070008000900010000

Dis

ch

arg

e (

cfs

)

Air Temp Temp 2 Discharge

Sunrise Pool (Upstream Temperature Logger)

05

101520253035404550

8/26 8/31 9/5 9/10 9/15 9/20 9/25

Te

mp

era

ture

(De

gre

es C

elc

ius)

010002000300040005000600070008000900010000

Dis

ch

arg

e (

cfs

)

Air Temp Temp 1 Discharge

Pebble counts:Pebble counts:

Pebble Count at Lower Sunrise Stranding Pool November 3, 2005

05

10152025303540

< 5/8 5/8 - 7/8 7/8 - 11/4

1 1/4 - 13/4

1 3/4 - 21/2

2 1/2 - 31/2

3 1/2 - 5 5 - 7 > 7

Size Range (inches)

Per

cen

t

Pebble Count at Lower Sunrise Stranding Pool November 3, 2005

0

20

40

60

80

100

0 2 4 6 8 10

Diameter (inches)

% F

iner

Pebble counts: 2005 vs. 2006Pebble counts: 2005 vs. 2006

Pebble Count at Lower Sunrise Stranding Pool November 3, 2005

0

20

40

60

80

100

0 2 4 6 8 10

Diameter (inches)

% F

iner

Pebble Count at Lower Sunrise Stranding Pool December 20, 2006

0

20

40

60

80

100

0 2 4 6 8 10

Diameter (inches)

% F

iner

Opening the connecting channel:Opening the connecting channel:

Web page:Web page:

• Volunteers are good, but a BobcatVolunteers are good, but a Bobcatis betteris better

• New channel withstood 35,000 cfs flow New channel withstood 35,000 cfs flow (10 year event) with little change(10 year event) with little change

• Vandalism was the biggest problemVandalism was the biggest problem

• Signs or information for the Signs or information for the public might helppublic might help

Conclusions:Conclusions:

SACRAMENTOSTATE