MAPANDCOMPASSWORKSHEET-PEO356–BACKCOUNTRYNAVIGATION

Thepurposeofthisworksheetistoprovideyouwiththeopportunitytoreviewbasicmapandcompassskillsandreviewthetravelroute

priortoparticipatingintheBackcountryNavigationouting.Worksheetsareduebythedeadlinespecifiedonthecourseschedule-late

submissionsarenotacceptable.Agradeof80%orbetterisrequiredforapassinggrade.Bearingsmustbenomorethan2°off.Distances

mustbewithinone-tenthofamile,andelevationsmustbewithinonecontourinterval.Ifafeatureisbetweencontourlines,splitthe

difference.Collaborationwithfellowclassmatesishighlyrecommended.

You'llneedacompassandthecoursemap.Theonlinepdfversiondenotesthetravelrouteandcampsites.Usetheonlineversiontomark

thetravelrouteandcampsitelocationsonyourfieldmap(whichwillbedistributedinclass).

__________________________________________________________________________________________________________________

A.CONTOURINTERVAL–Itshouldbeapparentthatthereare2contourintervalsonthismap.

Contourintervalofwestsideofmap:.....................ft. Contourintervalofeastsideofmap:...........................ft.

B.ELEVATIONESTIMATIONS–estimatethefollowingelevations

Elevationoftrailhead:..............................ft. ElevationofCamp1:..........................ft. ElevationofCamp2:...........................ft.

Whencalculatingelevationgainsorlossesalongaroute,carefullyassesstheroute'spathinrelationtothecontourlines.Incaseswherethe

routecomescloseto,butdoesnottouchacontourline,assumethatthisindicatesa1/2contourintervalchangeinelevation.Iftheroute

touchesacontourline,considerthisafullcontourintervalchangeinelevation.Areminderaboutterminology:Totalelevationgain/loss

meansthetotalofALLelevationgains/lossesalongtheroute.Netchangeinelevationistheelevationdifferencebetweentwopoints.Total

elevationgainsminustotalelevationlossesMUSTequalthenetchangeinelevationbetweenpoints.Ifitdoesn't,recalculate!

TOTALELEV.GAIN TOTALELEV.LOSS NETCHANGEINELEV.

VanstoCamp1: ......................................ft. ....................................ft. ......................................ft.

Camp1toCamp2: .......................................ft. ....................................ft. ......................................ft.

Camp2tobacktovans: .......................................ft. ....................................ft. ......................................ft.

C.DISTANCEESTIMATIONS

AsyoulearnedinWS,linear(map)distanceisdifferentthanadjusted(trail)distance,duelargelytoslopeerrorandthedifficultyofmarking

withaccuracywhereatrailislocatedonamap.Forthepurposesofthisassignment,multiplylineardistanceby1.3toestimatetraildistance.

Whenestimatingdistance,followthetravelroutesdenotedonthemap.

VanstoCamp1(alongtrailpastOtterLake/overhill5872) ..................................... linearmiles x1.3=............................trailmiles

RoutebetweenCamp1toCamp2(alongredroute): ..................................... linearmiles x1.3=............................trailmiles

Camp2tothetrailSWofLowerErmaBelllake(alongblueroute):............................. linearmiles x1.3=............................trailmiles

ErmaBelltrailtovans(alongblueroute): ..................................... linearmiles x1.3=...........................trailmiles

D.RATEOFTRAVELANDTRAVELTIMEESTIMATIONS

NOTE:Grouptravelingeneralisslow–evenslowerwhennavigationtrainingisanintegralpartoftheexperience.Plantoaveragethe

followingratesoftravel:

DAY1–1MPHplus10minutesperhourforbreaksduetonavigationpractice.

DAY2–sameasDAY1

DAY3–1.5MPHplus5minutesperhourforbreaks.Travel/routefindingisbecomingmoreefficient,breaktimeshouldbeshorter,andthe

lastpartoftherouteisalongawell-developedtrail.

BCNworksheet 2 RATEOF TRAVELTIME BREAK TOTALESTIMATED PROJECTED TRAVEL w/outBREAKS TIME TIME GROUNDSURFACEDay1RouteVanstoCamp1...................1mph .......................... ................................ ................................. (trail)Day2Route(red)Camp1toCamp2................1mph .......................... ................................ ................................. (mostlyopenoff-trail)Day3Route(blue)Camp2toRoadhead.........1.5mph .......................... ................................ ................................. (mostlyruggedoff-trail/trail)_________________________________________________________________________

ArrivaltimeatCamp1:..........................................................................................p.m.

ArrivaltimeatCamp2:..........................................................................................p.m.

Arrivaltimebackatvans:......................................................................................p.m.

_________________________________________________________________________

D.MAP,COMPASSANDGPSCALCULATIONS

1.Providethemagneticnorthbearingbetweenthefollowingpoints:

Day1:SkookumCr.Trailhead(centeroftenticon)tothexatpeak4470(wofOtterLake)............................................................°

Xatpeak4770toXatpeak5872. ..............°

Xatpeak5872toCamp1. ..............°

Day2:Camp1toCamp2 ..............°

Day3:Camp2tothepointwherethebluetravelroutemeetsthetrailbetweenLowerandMiddleErmaBellLakes ..............°

2.Youarestandingontheshoreofalake.AmagneticnorthbearingonPeak5872reads41°.Youraltimeterreads4500’.Whatlakeare

youstandingbeside?...........................................................................................................................................................................

3.Youareonapeakanddecidetopracticetriangulation.AmagneticnorthbearingonPeak4770reads240°.Amagneticnorthbearingon

Peak6602(SofIrishmtn.alongtheCascadecrest)reads101°.Yourfinalmagneticnorthbearing,onpeak5215(directlynorthofHelen

lake)reads175°.Whereareyou?........................................................................................................................................................

............................................................................................................................................................................................................

4.ProvidethepreciselocationofCamp1usingtheLANDMARKREFERENCESYSTEM.Tousethissystem,findaprominentfeaturenear

ourcampsitetouseasareference.Forthepurposesofthisassignment,usethesummitoftheIrishMtn.Providethefollowing:

a)ageneraldescriptionofourcampsitelocation(e.g.elevationandphysicalcharacteristics);..........................................................

......................................................................................................................................................................................................

b)theMAGNETICBEARINGandLINEARDISTANCETOourcampsiteFROMthesummitofIrishmtn..........................................

5.ProvidetheUTMcoordinatesforthefollowinglocations:

a)Camp1:........................................................................................................................................................................................

c)Camp2:........................................................................................................................................................................................

d)WherethetravelroutemeetsthetrailjustNWofMiddleErmaBellLakeonday3:......................................................................

revisedOctober2016

Assumethefollowing:-day1departurefromtrailheadat11:30a.m.-day2departurefromCamp1at2p.m.-day3departurefromCamp2at5:30a.m.