santa rosa creek watershed managemtne plan: summary of voluntary recommendations

8/3/2019 Santa Rosa Creek Watershed Managemtne Plan: Summary of Voluntary Recommendations

1/37

Santa

Rosa

CreekWatershedManagementPlan

SummaryofWatershedConditionsand

VoluntaryRecommendations


2/37

PublicMeeting#1ProjectTeam

Greenspace theCambriaLandtrust (RickHawley)GrantRecipient

CaliforniaDepartmentofFishandGame(MargaretPaul)Funder

CentralCoastSalmonEnhancement(Stephnie Wald)SubcontractFacilitator

StillwaterSciences(Zooey Diggory)SubcontractScientistsandPlanWriter

Stakeholderslandownersandresidentsworkingandlivinginthewatershed

TechnicalAdvisoryCommitteeagencyrepresentativesandprofessionalshaving

knowledgeofthewatershed


3/37

PublicMeeting#1Objectives

FINDOUTWHATSOUTTHERE(Compileexistinginformationonwaterquality,hydrology,geomorphology,vegetation,wildlife,landusetocharacterizecurrentand

historicalconditions

of

the

watershed

to

provide

baseline,

context,

and

guidance

for

decisionmaking)

FINDOUTWHATYOUTHINK(Solicitcommunityinput)

FINDOUT

WHATS

LIMITING

STEELHEAD

TROUT

POPULATION

(Evaluateand

prioritizetheprimaryfactorslimitingthesuccessofthesteelheadpopulation)

RECOMMENDPROJECTSTOIMPROVESRCWATERSHEDFORSTEELHEADTROUT

(Recommend

and

prioritize

projects

to

address

limiting

factors

to

improve

overall

ecologicalhealthandecosystemservicesofthecreek)


4/37

PublicMeeting#1WhatDoYouWanttheCreektoBeLikeandDoQuestionnaire

ForResultsPleaseSeeHandoutProvided

PublicMeeting#2SummaryofWatershedConditionsandVoluntaryRecommendations


5/37

StatusofTimeline

JulydraftplantoTAC

Latesummerdraftplantostakeholders

Latesummerpublicmeeting#2

September1stTACcommentdeadline

September15thSteeringCommitteedeadline

Early

November

distribute

draft

to

interested

publicEarlyDecemberpubliccommentperiodcloses;publicmeeting#3

SectionsofPlanIntroduction

SynthesisofWatershedConditions

SteelheadLimitingFactorsAnalysis

Recommendations


6/37

SubwatershedAreaA Stream lengthB

km2 mi2 km mi

Santa Rosa Creek 63.6 24.6 25.4 15.8

3.8 2.4 3.8 2.4

Curti Creek 5.5 2.1 3.5 2.2

Lehman Creek 6.5 2.5 4.1 2.6 East Fork Santa Rosa Creek 4.9 1.9 4.7 2.9

North Fork Santa Rosa Creek 5.6 2.2 4.2 2.6

Mora Creek 6.8 2.6 4.8 3.0

59.3 22.9 15.6 9.7

Fiscalini Creek 6.7 2.6 2.3 1.4

Green Valley Creek 31.5 12.2 12.8 7.9

Total Santa Rosa Creek

Watershed123 47.5 25.4 15.8

Overview


7/37


8/37

Santa Clara River Parkwa Flood lain Restoration Feasibilit Stud Geomor hic Processes

1863-1864:Drought kills off

beef cattle; shift

to dairy cattle

6,232WATERSH

EDIMPACTSCHRONOLO

GY

Ranching /

Logging

Road

Building

Mining

Channel

Modification

& Damaging

Floods

Population

(Cambria)

1769:

~300

Native

Americans

5,382 6,624

1939:

Hwy 1 and Santa

Rosa Creek Road

improved

1880(mining

areas

~2,000)

1874:

Oceanic Minebegins production

1964:

Highway 1 bypass

constructed around

downtown Cambria

1866:Cambria

est.

Late 1700s:early coast trail

est. along lower

Perry Creek

1916:

WWI

1859:

American

settlement

1840:

Rancho

SantaRosa

1875:300

1890:

7001900

(San Simeon

Township: 1,036)

1950:

7881960:1,260

1965:2,010

1990 2000 2009

0

10

20

30

40

50

60

1870 1880 1890 1900 1910 1920 1930 1940 1950 1960 1970 1980 1990 2000

Water Year

Precipitation

(in.)

Dry Years

Wet Years

Filling

of gullies

in Cambria

Walker Ditch (LowerPerry Creek) built to

drain Estrada Laguna

1914:

Flood

1956:

Flood

1969:

Flood

(95 m3

s-1

atMammoth Rock)

1995:Flood

(337 m3

s-1

in Cambria)

1850:

Coast wagon

road built

1868:

Cienaga Trail

est. along

Green Valley

1876:Coast Road

re-routed away

from lower Perry Creek

1859:

Santa RosaCreek trail

est.

1974:Highway 46

constructed through

Green Valley

1862:Mercury

discoveredin region

1810:

Rancho SantaRosa est.;

cattle ranching

1779:Mission San

Miguel est.,

logging and

ranching begins

1889:Fire destroys

Cambria

(lumber demand increase)

1916:

Logging productiondeclines following removal

of old growth timber

1960s:

Unauthorized

logging in upper

watershed

1979:

San Simeon Well

Field est.

5201967:

CCSD formed

??125 2

18

1972:63,370

1978:

~9,000

1993:

12,595

2001:65,400

?? ?? ?? ?? ??

2003:San Simeon

M6.5 quake

damages roads

1960s:Shift from

dairy cattle

back to beef

cattle

Pre-European

Colonization

European Arrival:

ResourceDevelopment1760 1860 1950

Ranching, Logging, and Mining Urbanization

(SLO Cal Poly Rain Gauge)

Steelhead

Population(Santa Rosa Creek)

GroundwaterExtractionSanta Rosa Basin(acre-feet)

??

* Reported values** un-quantified values; represents reported occurrence

and relative proportions

See text for information sources

Groundwater extraction,

Population, Steelhead population *

Ranching **

Logging **

Event occurrence

Mining **

Unknown value

No data for rainfall records

2010

1971:

Last sawmill

closes in area

3,061

1980

1880 1995Quiescent PeriodPop. Slow Down

RapidGrowt h Populati on Growt h

ndndndnd

nd

HistoricalWatershedConditionsandWatershedImpacts


9/37

IllustrationofRanchoSantaRosa

byDonJulien Estradaaspartofhis

1841land

grant

application.

Source:Coffman1995.

coordinatedeffortsbylandownerstoclear

valleybottomforestsalongmajorriversand

episodicstormevents

(1)greater

volumes

of

hillslope runoff

generatedperunitrainfall,withfargreater

volumesoffinesedimentproductionthroughout

thewatershedandincreasedgullying and

shallowlandslidepotentialonthesteeper

hillslopes;and

(2)

incision

of

the

mainstem

streamchannelsduetodecreasedstreambank

stabilityandincreasedstreampowerallowing

highflowstoentrenchthechannel.

Priorto

incision,

the

Santa

Rosa,

Perry,

and

GreenValleycreekchannelswouldhave

supportedhighergroundwaterelevationsand

morefrequentinundationunderlowerflows,

whichsupportedthevalleyforests.

HistoricalWatershedConditionsandWatershedImpacts


10/37

GeologyandTectonics


11/37

Climate


12/37

LandUses


13/37

Type of Development

Adelaida Planning Areaa Rural Planning Areaa

2003 2004 2005 2006 2007 2008 Total 2003 2004 2005 2006 2007 2008 Total

Winery facility 1 10 2 4 9 10 36 0 0 0 0 0 0 0

Misc. commercial 0 2 0 0 1 2 5 0 0 0 1 0 0 1

Commercial/ industrial

addition/alteration2 4 1 7 3 2 19 2 2 0 0 0 2 6

Farm support quarters 0 1 0 0 0 0 1 0 0 0 1 0 0 1

New single family

dwelling3 19 12 12 24 15 85 0 3 5 4 1 3 16

Guesthouse 1 2 3 1 4 2 13 0 0 0 2 0 0 2

Secondary dwelling 0 0 1 1 0 1 3 0 0 0 0 0 0 0

Mobile home 2 6 9 8 1 11 37 1 0 0 1 1 1 4

Swimming pool/spa;

resident. & comm.3 5 5 7 7 8 35 0 0 0 0 0 1 1

Radio/cell tower 0 0 2 1 2 1 6 0 1 1 0 0 0 2

Wind/solar system 0 5 4 14 11 18 52 0 1 1 0 1 3 6

CompleteddevelopmentprojectsintheAdelaidaandRuralNorthCoastPlanningAreas

ofSanLuisObispoCountybetween2003and2008

LandUses


14/37

WaterresourcesintheSantaRosaCreekwatershed. Perennialandintermittent

streams,groundwaterbasin,andstreamgaugelocationsareshown.


15/37

0

500

1,000

1,500

2,000

2,500

3,000

3,500

4,000

4,500

5,000

1958

1960

1962

1964

1966

1968

1970

1972

1974

1976

1978

1980

1982

1984

1986

1988

1990

1992

1994

Water Year

Instanteouspeakdischarge(cfs)

USGS 11142200 data

from correlation with USGS 11147070 data

0

2,000

4,000

6,000

8,000

10,000

12,000

14,000

16,000

18,000

19

62

19

64

19

66

19

68

19

70

19

72

19

74

19

76

19

78

19

80

19

82

19

84

19

86

19

88

19

90

19

92

19

94

Water Year

Instanteouspe

akdischarge(cfs)

SLO STN 16 data

from correlation with USGS 11147070 data

Annualmaximumdischargefor

SantaRosa

Creek

at

Cambria

based

onUSGSgauge11142200(top)and

SLOCountyStation16atHighway1

WaterResources


16/37

0

5

10

15

20

25

30

35

40

October

Novem

ber

Decem

ber

January

Fe

bruary

Marc

h

Apri

l

May

June

Ju

ly

August

Septem

ber

Months (WY 1957-1994)

Monthlymeandischarge(cfs)

0

10

20

30

40

50

60

70

80

90

Octobe

r

Novembe

r

Decembe

r

Janu

ary

Febr

uary

March

April

May

June Ju

ly

Augu

st

Sep

tembe

r

Months (WY 1976-1992)

Monthlymeandischarge(cfs)

Monthly

mean

discharge

for

Santa

RosaCreekatCambria,basedonUSGS

gauge11142200(fromcorrelation

withUSGSgauge11147070toextend

periodbeyondWY1972through

1994)

(top)

and

SLO

County

Station

16

(bottom)

WaterResources


17/37

0

100

200

300

400

500

600

1956

1958

1960

1962

1964

1966

1968

1970

1972

1974

1976

1978

1980

1982

1984

1986

1988

1990

1992

1994

1996

1998

2000

2002

2004

2006

2008

Year

Gro

undwaterExtraction(acre-feet)

1979 - San Simeon Well

Field established

1967 - CCSD formed

GroundwaterextractionamountsformunicipalusesinCambria.Data

from19561988providedbyYatesandVanKonyenburg (1998)and

datafrom1989presentprovidedbyCCSD(2009).

WaterResources


18/37

Beneficial UseEstuary Creek

Municipal and Domestic Supply (MUN) X

Agricultural Supply (AGR) X

Industrial Service Supply (IND) X

Ground Water Recharge (GWR) X X

Freshwater Replenishment (FRSH) X

Water Contact Recreation (REC-1) X X

Non-Contact Water Recreation (REC-2) X X

Commercial and Sport Fishing (COMM) X X

Warm Fresh Water Habitat (WARM) X

Cold Fresh Water Habitat (COLD) X X

Estuarine Habitat (EST) X

Wildlife Habitat (WILD) X X

Preservation of Biological Habitats of Special Significance (BIOL) X

Rare, Threatened, or Endangered Species (RARE) X X

Migration of Aquatic Organisms (MIGR) X X

Spawning, Reproduction, and/or Early Development (SPWN) X X

Shellfish Harvesting (SHELL) X

BeneficialusesofSantaRosaCreekwatershedsurfacewaters

WaterQuality


19/37

TemperatureSantaRosaCreek isbeingconsideredforplacementontheClean WaterAct303dlistof

impairedwaterbodiesfortemperature.

(RWQCB2010 ).

Reference

=Draft

California

2010

Integrated

Report

(303(d)List/305(b)Report),CentralCoastRWQCBonlinereport

http://www.waterboards.ca.gov/water_issues/programs/tmdl/2010state_ir_reports/0095

9.shtml#11376

WaterQuality

Life Stage Temperature (degrees F)

Adult migration 46-52

Spawning 39-52

Incubation and emergence 48-52

Fry and juvenile rearing 45-60

Smoltification Less than 57

Steelhead

Optimal

Water

Temperatures

Nelson (2009) and Alley (2008) describe exceedance of optimal

water temperatures.


20/37

WaterQuality

DissolvedOxygen

D.W.

Alley

&

Associates

(2008)

recorded

DO

levels

in

the

lagoon

from1992

to

2005

DOlevelsrarelymetthe5mg/lcriterionorthe2mg/llethallimit forsteelhead

Concludedthat

areduction

in

tidal

overwash could

help

to

reduce

the

low

DO

salinelayeratthebottomofthelagoonandanincreaseinlagoondepthfrom

increasedstreaminflowandincreasedshadingcouldhelptopreventfilamentous

algaegrowth

WhileDOlevelsfrequentlyfailedtomeetguidelinesandlikelyrestrictedthe

activityofsteelheadinthelagoon,theywerelikelylesslimitingthan

temperaturetosteelheadsurvivalinthelagoonsincesteelheadcouldavoidthe

lowDOzonesinthesalinelayeratthebottomofthelagoon


21/37

WaterQuality


22/37

Location DateSediment THg

(mg/kg)

RB-SR-D1a Santa Rosa Creek upstream of Curti Creek 2/12/1992 0.192

RB-SR-C1a Curti Ceek above Oceanic Mine tributary 2/12/1992 0.511

RB-SR-A1a Tributary north of Oceanic Mine 2/12/1992 0.601

RB-SR-A2a Tributary at Oceanic Mine 2/12/1992 1.095/1.75 d

RB-FD-16a

Tributary in vicinity of Oceanic Mine 5/19/1986 3e

RB-SR-Ba Tributary south of Oceanic Mine 2/12/1992 6.79

RB-SR-C2a Tributary at Oceanic Mine just above Curti Creek 2/12/1992 5.01

RB-SR-C3a Curti Ceek just below Oceanic Mine tributary 2/12/1992 1.104

RB-SR-D2a Lower Curti Creek 2/12/1992 1.194/8.48 d

RB-SR-D3a Santa Rosa Creek downstream of Curti Creek 2/12/1992 0.161

HSC-1bSanta Rosa Creek 20 ft upstream of Main Street

Bridge7/15/2009 0.12

HSC-2bSanta Rosa Creek at Creekside Reserve at Center

Street7/15/2009 0.16

HSC-3bSanta Rosa Ck Lagoon, 350 feet upstream of bench

at Shammel Park10/12/2009 0.18

HSC-4b Santa Rosa Ck Lagoon, at Shamel Park bench 10/12/2009 0.54

SWAMP-1c Mouth of Santa Rosa Ck 3/1/1998 0.38

SedimentmercurylevelsinSantaRosaCreekwatershed

a Source:Schwartzbart 1993b Source:L.HarkinsandSierraClub,unpublisheddata,2009c Source:SWAMP1998dTwomeasurementsweretakenatthissamplepointe Anotherlabmeasured41mg/kgatthispoint

WaterQuality

0.08mg/kg=estimatedpre

miningmercurylevelsinCalifornia

streamsediments

0.1mg/kg=reservoirsedimentsin

ahighly

mercury

mining

impacted

sectionofGuadalupeRiver

0.12mg/kg=thresholdeffects

level

0.69mg/kg=Probableeffects

level

20mg/kg=hazardouswastelimit


23/37

WaterQuality

BenthicMacroinvertebrates (BMI)


24/37

WaterQualityBenthic

Macroinvertebrates

(BMI)


25/37

WaterQualityBenthic

Macroinvertebrates

(BMI)


26/37

Location

Sediment Sources

Landslides

Gullies and rills

High yielding Geomorphic Landscape

Units

Creek incision

Bank erosion of high bluffs following

incision

Road-related erosion

Sediment Storage

Lower Perry Creek in the vicinity of the

former Estrada lagoon

Water storage pondsChannel bed in upper reaches

Channel bed in lower reaches

Transfer Dynamics a

Upper reaches

Middle reaches

Lower reaches

SedimentsourceandtransferareasintheSantaRosaCreek

Watershed

SeePages97100inGeomorphologyTechReportfordetail


27/37

Potentialfish

passage

barriers

in

the

Santa

Rosa

Creek

watershed


28/37


29/37

Vegetation/landcovertypeswithintheSantaRosaCreekwatershed


30/37

Landcover/Vegetation Type

Area (sq meters) % of watershed area b

Grassland/Herbaceous2,584,020 63.4%

Scrub/Shrub443,850 10.6%

Mixed395,190 9.5%

Developed

Open Space264,780 6.4%

Low Intensity55,980 1.3%

Medium Intensity16,740 0.4%

High Intensity450 0.01%

263,520 6.4%

Cultivated Crops48,840 1.2%

Woody Wetlands

21,120 0.5%

Pasture/Hay4,530 0.1%

Emergent Herbaceous Wetland570 0.01%

AreaofvegetationtypesintheSantaRosaCreekwatershed.a

A Source:NationalLandcover Dataset(2001)B ProportionoflandcovercategorywithinthetotalwatershedareadeterminedinGIS.


31/37

arundo/giantreed(Arundo donax)

pampasgrass(Cortaderia selloana and/orC.jubata)jimson

weed

(Datura stramonium)

capeivy(Delairea odorata)

eucalyptus(Eucalyptus sp.)

Frenchbroom(Genista monspessulana)

Englishivy(Hedera helix)

walnut(Juglans sp.)

castorbean(Ricinus communis)

redwood(Sequoiasempervirens)nasturtium(Tropaeolum sp.)

periwinkle(Vinca major)

palm(various)

Thegreatestdiversityofnonnativeinvasiveplantsintheripariancorridorwasfoundto

occurinthelowersixmilesoftheriver,andatrivermiletwo specifically(Nelsonetal.

2009).

Non-native invasive plant species


32/37

Wildlife

SummariesTheLandConservancySRCWatershedConservationPlan

CambriaForestManagementPlan,

FiscaliniRanchPreservefinalMasterEIR

SpecialstatusWildlifeSpeciesThreatenedorendangeredundereitherthefederalorstateEndangeredSpeciesActs,or

asaspeciesofspecialconcern(SC)byCDFGwiththepotentialtooccurinthe

watershed

Observedinthewatershed(Rathbun etal.1991,Nelsonetal.2009;D.W.Alley

&Associates2008;MorroGroup2009):southernPacificpondturtle(Actinemys marmorata pallida;SC)

monarchbutterfly(Danaus plexippus;SC)

tidewatergoby

(Eucyclogobius newberryi;

federally

endangered

and

SC)

Montereyduskyfooted(SantaLucia)woodrat (Neotoma macrotis luciana;SC)

steelhead south/centralCaliforniacoastDPS(Oncorhynchus mykiss irideus;federally

threatenedandSC)

Californiaredleggedfrog(Rana auroradraytonii;federallythreatenedandSC)Americanbadger(Taxidea taxus;SC)

twostriped

gartersnake (Thamnophis hammondii;

SC)


33/37

Critical

IssuesWaterResources

WaterQuality

FineSediment

InchannelInfrastructure

NonnativeInvasiveSpecies


34/37

SynopsisofRecommendationsVoluntaryactionsthatcouldbedonebyavarietyofentities;notprescriptionsasmuchastheyareagroupofideasthat

COULD

be

undertaken

voluntarily

by

landowners

and

others

RemoveBarrierstoFishPassagemodifyFerrasci Roadcrossing

removeorupgradeundersizedculvertsattributaries

Increase

flows

through

the

middle

reaches

of

Santa

Rosa

CreekassessthestatusofpotentialfishpassagebarriersinthePerry/Green ValleyCreeksub

watershed

IncreaseSummerandFallInstream Flows

develop

an

updated

water

budget

implementwaterconservationstrategies

constructoffstreamwaterstorage

identifycriticalsteelheadinstream flowrequirements

Restore

the

Riparian

Corridor

Managecattleusingarangeofmethodsincludinggrazingmanagementintheripariancorridor

Plantnativeriparianspecies

Minimizetheneedforbankprotection

Usealternativestoriprapwherebankprotectionisnecessary

Control

non

native

invasive

species


35/37

RemediateSourcesofFineSedimentreduceand/orretainfinesedimentdeliveryfromthePerry/GreenValley Creeksub

watershed

treathillslope finesedimentsources

EnhanceLargeWoodyDebrisinventoryLWD

outreachtolandowners

implementLWDenhancementprojects

IncreaseUnderstandingofSteelheadPopulationDynamicssamplesteelheadinspringandfall

monitorescapement

assesssteelheadsmolt growthinandoutsidethelagoon

ReduceMercurySupplyerosioncontrolandbioremediationattheOceanicMinesite

assessmercuryuptakeintheaquaticfoodchain

IncreaseCommunityCapacityforWatershedManagement

continue

to

Support

Watershed

Groups

SynopsisofRecommendations


36/37

PublicInputonRecommendations

WhatICan

Live

With What

ICan

NOT

Live

With

WhatsMissing?


37/37

Thankyouforattending!!

Thispresentation

is

available

at:

http://www.greenspacecambria.org/home_menu.htm

Fundingforthis

projectwas

providedby:

santa rosa creek watershed managemtne plan: summary of voluntary recommendations

Documents