Map, Compass & GPS

Map, Compass & GPS
Wild flowers along Fall Creek on the way to the Green Lakes - Oregon

Monday, September 24, 2018

GPS Tune-up for your fall hunt.

Hunters, this is a great time to tune-up and practice with a GPS receiver.  There are several things that one can do before leaving home.   Here are a few recommendations to consider.

Setup

  • Dump those old AA batteries, put in new ones.  If you leave your GPS on all day in the
    Garmin Image
       field expect to change the batteries nightly.  Consider using lithium AA’s, they last longer and work better in cold temperatures. 

  • “Match the map” with the receiver’s navigation selection options. Specifically, match the coordinate system (e.g., UTM or Latitude/Longitude) and map datum that are found on the map.  Consider shifting the receiver’s compass to degrees true.  Further, let’s have everyone in a hiking or hunting group use the same settings too; let’s all be on the same page.

  •  Keep you navigation simple.  It’s easier to work with a handful of waypoints rather than list of 300.  Dump the Junk - Delete the old waypoints, the ones you will never use again.  Log important waypoints (e.g., that lake side camp site) on your PC or in a notebook.  Visit www.easygps.com or www.garmin.com for a place to store waypoints.

  • Install maps on your GPS receiver.  Maps on the receiver are a natural complement to your paper field map.   Quality maps are available from onxmaps.com and GPSFiledepot.com (free).

  • Adjust your map pages’ zoom setting to see what works best.  For general trail hiking I  keep my zoom setting at 800 feet.  This setting allows me to view trails, water sources, roads and elevation contours.

  • Visit the manufacture’s web site to see if there are any firmware updates.  I do this every couple of months.

  • When batteries are replaced calibrate the electronic compass.

Tune-up

  • Verify that you are receiving enough satellite signals.  Check this on the satellite status screen.  Four satellites are the minimum.  Give older receivers the time to collect satellite data; don’t rush the navigation process.
  • Give key waypoints names.  When marking a waypoint enter names like “camp” and “truck.”  It’s easier and more meaningful to find “truck” in the list of waypoints than is waypoint 542; or was it 245.  

·        After marking a waypoint, verify that it has been saved to the receiver's memory by checking either the map page or in the waypoint file (select “where to” or “find.”)  If the waypoint is on the map or in the list of waypoints, the hiker is ready to go.  If the waypoint is not found, start over.

·      
Outdoor Quest Image
 When it’s time to return to a destination chose “Where To” or “Find” on your keypad or menu.  Select the waypoint from the list provided.  Press the “Page” button and rotate through the many displays to the “Compass” page.  A large red arrow should appear on the face of the compass pointing to the selected waypoint.  When on course to the destination the arrow points to the top center of the receiver.  Practice this specific process at home before heading to the field.

  • Navigation is a perishable skill.  I recommend that two weeks before an outing take the GPS receiver everywhere.  Add waypoints, delete waypoints and find a saved waypoint.  This process develops familiarization with the unit and allows the user to develop confidence with the receiver      and personal ability.


  • Compliment GPS skills with a good review of map and compass fundamentals. Learn to back up electronic position fixing with bearing triangulation.   Worst case, a broken GPS becomes a paperweight for your map while afield.  For more information visit www.outdoorquest.blogspot.com .

·         When on the trail compare GPS position data with a map.  Compare what is presented electronically with what is on the map.

I suggest checking out Lawrence Letham’s book GPS Made Easy from the library.  This book compliments the owner’s manual.  An excellent reference for map and compass use is June Fleming’s Staying Found.

Taking a class can further enhance you GPS knowledge.  Classes are frequently offered through the local community college’s continuing education program or at local retailers such as  REI.

A map and compass always goes with me into the field.  I carry a Silva Ranger compass and get my maps from Caltopo.com  (their maps are free.)

Have fun while building on your fundamental navigation skill sets.  Consider setting up a treasure hunt or a geocach for a family get together.  Make it fun, make it simple and explain that these skills could one day make a huge difference if the ever got lost in the woods. 





Sunday, September 2, 2018

Snakes


 The California Department of Fish and Wildlife (CDFW) is reminding the public to be rattlesnake safe. All of California is snake country. Much like bats, rattlesnakes are often misunderstood. They play an important role in the ecosystem by keeping rodent populations under control.

California has six venomous snakes, all of which are various species of rattlesnake. They are heavy-bodied, blunt-tailed with triangular-shaped heads. A rattle may not always be present, as they are often lost through breakage and not developed on the young. Additional species information can be found here.


Rattlesnakes are generally not aggressive and usually strike when threatened or provoked. Given room, they will retreat and want to be left alone. They are not confined to rural areas and have been found in urban environments, lakeside parks and golf courses.
The best protection against unwelcome rattlesnakes in the yard is to have a “rattlesnake-proof” fence. The fence should either be solid or with mesh no larger than one-quarter inch. It should be at least 3 feet high with the bottom buried a few inches in the ground.
Keep the fence clear of vegetation and debris. Encourage and protect kingsnakes, which prey on rattlesnakes, and other natural competitors like gopher snakes and racers.

On rare occasions, rattlesnakes can cause serious injury to humans. Most bites occur between the months of April and October when humans are most active outdoors. The California Poison Control Center notes that rattlesnakes account for more than 800 bites each year in the U.S. with one to two deaths. 
CDFW recommends the following outdoor safety precautions:
  • Wear hiking boots and loose-fitting long pants.
  • Never go barefoot or wear sandals when walking through wild areas.
  • When hiking, stick to well-used trails.
  • Avoid tall grass, weeds and heavy underbrush where snakes may hide during the day.
  • Do not step or put your hands where you cannot see, and avoid wandering around in the dark.
  • Step ON logs and rocks, never over them, and be especially careful when climbing rocks or gathering firewood.
  • Remember, rattlesnakes can swim so never grab “sticks” or “branches” while swimming in lakes and rivers.
  • Teach children to respect snakes and to leave them alone.

What to do in the event of a snake bite:
  • Stay calm and wash the bite area gently with soap and water.
  • Remove watches, rings, etc, which may constrict swelling.
  • Immobilize the affected area and go to the nearest medical facility.
What you should NOT do after a rattlesnake bite:

  • DON’T apply a tourniquet.
  • DON’T pack the bite area in ice.
  • DON’T cut the wound with a knife or razor.
  • DON’T use your mouth to suck out the venom.
  • DON’T let the victim drink alcohol. 
A great article on snake bites was published in Outside Magazine.

Friday, August 31, 2018

Map Datum



For most hikers, the map datum selection isn't critical.  New and right out of the box, GPS receivers are set to Map Datum WGS84. And for most hikers that setting will be just fine. Out and back - no problem.


But if you are going to take coordinates taken from a map or from a friend, AND accuracy is important, ensure you use the right map datum.

Map Datum is defined as:
"A mathematical model of the Earth used by map makers.  Datum allows for the accurate transfer of geographic data from a spherical earth to a flat map.  In the United States, there are three common map datum’s found on topographic maps.  These are WGS 84, North American Datum 1927 (NAD27) and NAD83.  Select the datum that is used on the map. " 
 Not selecting the correct map datum could induce an error of over 100 meters/yards. I emphasize that hiking groups should all be on the “same page” regarding the set-up options of their GPS receivers. 

Map Datum information is found in the map key on most maps.  

While planning a journey or at the trail head, taking the time to adjust settings among hiking partners is critical.  Before departing, validating map datum and coordinate format should be a priority.

First, match the map’s datum.  A topographic map identifies datum in the map key.  Once the datum is identified ensure that all GPS receivers are set to match the correct datum.  See the illustration below.

For more information on GPS setup setting check out:

Improving GPS AccuracySetup Your GPS



      












Thursday, August 9, 2018

Foods Toxic to Dogs


My wife and I have been doing quite a bit of traveling this summer.  In late May we visited our friends in Virginia.  We had a very long day of flying and looked forward to a relaxing visit.  While we were recuperating, the family’s dog was in the guest room scrounging through one of our suite cases.  My wife went to the guest room, found the dog and importantly, found a bag of Dove Dark Chocolate that had been opened with all the contents gone.  Out host called the local Vet Emergency room and was told to get the dog to the Vet ASAP.

On their arrival, the Vet administered a shot that quickly caused the dog to throw-up.  
The following are foods that are poisonous to our pets.  The Humane Society has a complete listing.

Alcohol
Avocado
Chocolate, Coffee and Caffeine
Citrus
Coconut and Coconut Oil
Grapes and Raisins
Macadamia Nuts
Milk and Dairy
Nuts
Onions, Garlic, Chives
Raw/Undercooked Meat, Eggs and Bones
Salt and Salty Snack Foods
Xylitol
Yeast Dough


If you believe that your pet has ingested toxic foods contact the ASPCA Animal Poison Control Center at (888) 426-4435. 

Check the label information on the food product.  The Dove Chocolate packaging had a phone number on the back for emergency support.  I called that number and received excellent help.







Thursday, April 5, 2018

How to Store Your Camping Gear

The following post is by Guest Contributor Lee

You will need to store your camping gear between outdoor activities. However, don't just throw all your items into a closet. Instead, follow these camping gear tips to ensure you are ready for your next adventure.

Put Your Items in a Secluded Place

Unless you go for an adventure every week, you probably want your camping gear to stay in a safe and secluded space. Space needed will depend on how much equipment you need to store, but some of the places where you can store your camping gear include the garage, an unused closet, or the attic. Consider finding a self-storage unit if you don't have enough space in your house to keep your camping gear.

Keep Your Camping Gear in a Sealed Container

Don't just go with the cheapest option when you are looking for camping storage containers. Instead, look for containers or shelves that meet your needs and are durable. You could store outdoor gear on heavy duty wall shelves or in portable lockers that can serve as a bench while camping. Make sure to get tightly sealed containers if you live in an area with high humidity. Moreover, tie-down loops and reinforced handles can help secure the storage locker in your vehicle.

Label Every Package

Once you have sorted out the gear, place them in labeled containers. It can be advantageous to use clear packages as they let you see what is inside. However, labeling makes it easier to find an item. You can use a permanent marker to write on the bag or packaging container. Alternatively, you can apply self-sticking labels to each container or bag. Self-sticking tags can be an attractive option especially if you want to make changes later or if you are short-sighted.
Your labeling options can change a bit if you are using fabric containers such as canvas bags. You can use a sewing machine to personalize your gear. Alternatively, you can attach luggage tags to the handles. You can use duct tape to make personalized luggage tags. You can also write descriptions on slips of paper and attach them to your bags or containers using a laminator. You can use whatever is at your disposal to be as creative as possible.

Keep the Odor at Bay

Nothing is more irritating than pulling out your camping gear before an adventure and discovering that it smells awful. Your camping gear can be ruined by dirt, mildew, and/or bad odor. It is necessary to clean your camping gear thoroughly before your next trip. Clean and dry your camping gear, especially your bedding and tent before even storing it to avoid a disgusting smell. You can also pack a dryer sheet along with your camping gear to help with the smell.

Compartmentalize Smaller Items

To help keep track of everything, it would be good to put small, related items together. You can keep cooking gadgets and utensils in something like a toolbox. You can browse the internet to find boxes of different sizes and shapes to ensure you find the container that fits whatever you want to store. Plastic bags are an inexpensive and convenient option for storing as well. You can even recycle items such as comforter bags and coffee cans to reduce the costs. You will be able to find what works best for you.


Hopefully these tips can help you figure out how best to store your camping gear between trips this summer. You’re going to want to be able to find everything each time you go, and maybe incorporating a few of these can help you. 

Sunday, April 1, 2018

Wilderness Guide

The National Outdoor Leadership School's "Wilderness Guide" is a wonderful book to add to your backcountry library.

"The classic backpackers handbook - revised and updated with information anon new equipment and techniques-providing expert guidelines for backpackers, hikers, campers- anyone who loves the outdoors."

Author Mark Harvey is a NOLS instructor and  freelance writer.

This book is an excellent first step in the planning process for backcountry  travel.

Available at Amazon.


Friday, March 30, 2018

Magnetic Declination

Declination: A Noun. The horizontal angle between the true geographic North Pole and the magnetic North Pole, as figured from a specific point on the Earth.”

 Declination is a term that causes “brain cramps” for many of my students in my map and compass classes. When I mention Magnetic Declination eyes roll.

The web site www.magnetic-declination.com has an excellent discussion of what declination is and what causes it:

“Magnetic declination varies both from place to place, and with the passage of time. As a traveler cruises the east coast of the United States, for example, the declination varies from 20 degrees west (in Maine) to zero (in Florida), to 10 degrees east (in Texas), ......the magnetic declination in a given area will change slowly over time, possibly as much as 2-25 degrees every hundred years or so.......... Complex fluid motion in the outer core of the Earth (the molten metallic region that lies from 2800 to 5000 km below the Earth's surface) causes the magnetic field to change slowly with time."

Land navigation is based on the relationship to the North Pole; also known as “true north.  The measure of degrees of direction in relation to true north is called “degrees true.”  Maps are laid out in degrees true.  Land features (buttes, mountains, streams) on a topographic map are in reference to degrees true.  By that I mean the bearing from one mountain peak to another will be referenced in degrees true.  The map below illustrates that point. 








Magnetic compasses do not point to true north (the North Pole); the magnetic needle points to an area that could be considered the magnetic North Pole. 
As illustrated below, declination data can be found in the diagram at the bottom of a USGS topographic map, (on some commercially produced maps it can be hard to find.) 

Because declination changes over time, I recommend that map declination information be verified at www.magnetic-declination.com.   This is essential in the Pacific Northwest where maps are notoriously out of date in terms of road,  and city data.
So, how do we make this simple?  How do we convert magnetic to degrees true?
I could do the math.  In Oregon, where I live, the magnetic declination is 15.6° East declination.

My recommendation: have the compass do the work so that there is no confusion with the math.

To do this, I need to choose a compass that can be adjusted for declination.  Some examples are the Silva Ranger or the Suunto M3.

With one of these compasses, the compass dial or housing is adjusted and rotated manually.  Both the Suunto and Silva Ranger come with a small, flat adjusting tool.  Consult with owner’s manual that came with the compass.

If declination is Easterly (Western U.S.) I will rotate the dial causing the baseplate’s orienting arrow to move in a clockwise direction.

   If declination is Westerly (Eastern U.S.) I will rotate the dial causing the baseplate’s orienting arrow to move in a counter-clockwise direction.

Now, adjust the dial and align the red magnetic needle on top of the orienting arrow (the red arrow engraved on the baseplate) the compass will provide directions in degrees true.

Tuesday, March 27, 2018

Managing Your GPS Waypoints




Outdoor Quest //Blake Miller image

 Lots of things can happen to a GPS Waypoint or data file.  You can put data in. You can take data out.  You can lose it (the GPS breaks or the wrong button entry is selected.)  But be careful, far worse, too much data can make your navigation difficult.

 In my land navigation class I stress keeping your navigation simple.  Frequent and simple Waypoint management is essential to GPS use.  When it’s time to return to the truck, it should be obvious what GPS Waypoint to select. 

 Dump the junk before the start of a trip.  As you leave the trail head your GPS should have only necessary data saved on your GPS.  That Waypoint for the fishing hole is important but needs to be saved elsewhere.

 Start by deleting Waypoints that really are not needed.  Free those data bites to the atmosphere.

 To save your “got to have, must save Waypoints:” 

             1.            Use Garmin’s “Trip and Waypoint Manager.”  It probably came with your GPS.  It can also be purchased from Garmin for about $30.00; www.garmin.com.  Down load those Waypoints to your PC.

 2.            If you don’t have the Garmin program, consider “Easy GPS.”  It is free and available at www.easygps.com.

            3.            Log the important data in a notebook.

 Electronic storage allows you to save Waypoints and track data (that bread crumb trail on your map screen.)  Further, you can upload old Waypoints another day for a trip to that special fishing spot.  This data can also be down loaded into your friends GPS too.  It can also be uploaded to your new GPS in the future.

 Remember though; when you receive or transfer GPS Waypoint data always verify that you have the compatible map datum and coordinate system set on your receiver.

 Finally, give important Waypoints a name.  It’s easier to remember a GPS Waypoint named “CAMP” instead of 21 (or was it 25.)







Your Backcountry Travel Plan

There are lots of articles and posts about letting the responsible person know about your travel plans.  Should you not return home on time they are the trigger to begin the search process.


This may be the most comprehensive plan made yet!!!


After the loss of James Kim in the Oregon back country in 2006 I wrote a hiker's trip plan and posted it on myblog.  I had input from several valued sources.  I wanted something better for the wilderness traveler than a note to a neighbor.  My intent was to provide the search responders something valuable to go by.


In far too many SAR missions, the reporting party has little information for the searchers to go on to begin their search.

My plan can be found here.  It is a basic .pdf form.

Suggestions are certainly welcome.


911 Call center
Still, that responsible person plays a huge role in contacting authorities to begin a search.  My recommendation would be to pick a person that will make the 911 phone call without hesitation.

Travel safely.

Monday, March 26, 2018

Power For Your Gear in the Backcountry

A few years ago I posted a short article about power for your gear: (.e.g. GPS receivers.)  Here is an update.

A frequent question that I get is how long do batteries last?  What can be counted on for GPS battery power.

From my experience the answer is about 12 hours when used continuously.

I have noticed that the electronic "battery power meter" provides OK information. The four  power bars last reasonable well initially.  But after the receiver has been on for most of the day, I have noticed that the GPS battery power goes from three bars to two and then one quite quickly.

I keep my GPS powered on all the time.  I l do this to evaluate track data later.  For example, when I am in the field hunting I discard the batteries at the end of the day, replace with new one, and calibrate the compass. I find it handy to replace batteries at camp rather than going through the process in the morning's darkness.  I like to just grab and go in the morning.

I particularly like the Duracell and COSTCO batteries. Rayovac batteries but do not last nearly as long as the others.

For short duration hikes I will use the rechargeable ENELOOP batteries.  I bought my set at COSTCO. I find that the ENELOOP batteries are very versatile, retain the charge a long time, are simple to charge and quickly recharge.

Small sets of 4 are available at some of the big box stores too but they are not cheap.

 I recommend that if your gear uses AA batteries predominately then stick  to those rather than having a mix of AA, C and AAA.


Friday, March 23, 2018

Ten Essentials - Include a Whistle

The Ten Essentials is a list of ten very basic items that a hiker or hunter should carry in a day pack; visi tThe Mountaineers Ten Essentials to get their traditional list. 

Consider this to be the foundation of your pack.

While sitting at a desk the backcountry hiker would consider this a very slim list.  Many of the essentials can be carried in a fanny pack.

One item I'd add to the list is a whistle.


Each year, lost hikers a located by using a whistle.  Of course one can yell.....for a short time; until one's voice is worn out.  Whistles require no batteries, can be really loud and take up little room. Ten essentials whistle.  I like the Fox 40 and I like to have a whistle made of plastic and is florescent/hunter orange.

Keeping it simple, here is what  is on amazon.com.  Sportsman's Warehouse has them too.

Saturday, March 17, 2018

Food For the Hiker/hunter

There is a new and very favorable dried food option available to the backcountry hiker or hunter.

Julie Mosier has just introduced her line of best quality  dried  available through her web site at www.https:foodforthesole.co.

Food for the Sole doesn't have a ton of salt in it.  Selections are packaged compactly, light  and take only a small amount of water to hydrate.

And you can use cold water to hydrate.

This is a great product.


Friday, March 16, 2018

Calling 911

The following post has some very good information about calling 911.  In my county of roughly 100,000 citizens the emergency call center receives over 300,000 calls a year. 

The following post is from www.wikihow.com.

911 is meant to connect you to help. In some areas, it is for serious emergencies only. In other areas, it is for anytime you want police or fire to respond. KNOW what the expectation is in your area. If you are not sure, call them and let them know it is not an emergency. They can let you know if you should be calling a different number.

Get on the line, and let the 911 dispatcher know what the call is about. Answer any questions they have as best you can, and stay on the line follow any instructions they give you while waiting for help to arrive.

They will ask questions to assess the level of response and the speed of response that is needed.

Be ready to tell them: - Your name - The number you are calling from and a call back number if that is different. - Where you are and where help is needed. Not all cell phones or VOIP based land lines give accurate locations. If it is not an address, you need to be aware of how they can find you, even if that means that you get them to a location that they can find and have a person to direct them the rest of the way. - Who needs help - What help is needed. If this is an emergency, tell them everything you know (how they got injured, what is injured, their level of alertness, any medical issues that are known). This is what they use to determine if a squad car can casually cruise through the area or if they need to get police, fire, ambulance all headed out with lights and sirens.

Stay on the line. They may ask you for updates or put an emergency res-ponder on the line to give you assistance in handling things before they get to you.  For more info on this topic go to:

Monday, March 12, 2018

UTM Grid For The Hiker


Universal Transverse Mercator (UTM) is a grid system that describes a person’s geographic location in the backcountry.  It is simple to understand and use because:


1.    It is intuitive -  it’s concepts can be understood quickly,

2.    It can be easily self taught,

3.    Young hikers grasp this system easily,

4.    A location on a map can be quickly determined, and;


5.    It is a selection option for Global Positioning System (GPS) receivers.  

A navigation grid is a reference system developed by cartographers that can be used to plot a geographic position on a map.   There are many grid systems available for use such as Latitude and Longitude and Universal Transverse Mercator (UTM).  Several countries have their own national grid system. 

The UTM system is just like a Cartesian Grid.  For example, the grid position below is just 2.2 units over and 2 units up.


 To understand the complete grid we will start by observing that the globe is divided into 60 zones.  Each zone is 6° of longitude wide.  Each zone runs north and south; 84° north to 80° south.


The image below highlights the UTM zones in the continental United States.


UTM grid consists of Northings and Eastings.  The image below highlights the complete layout of a UTM zone.  Notice the Central Meridian that runs north and south through the zone.  Like longitude, this meridian runs from pole to pole.  All values for measuring position are in meters.  At the equator the zone is 500,000 meters wide.  The width of the zone is described by Eastings.  Northings run north or south from the equator; again all values are in meters.



UTM coordinates are presented such that the zone is listed first, followed by the Easting and then the Northing.
                                    10   0524120 E  4891555 N

The hiker should think of a grid as a series of defined squares on a map (see below.)  On a 1:24,000 scale (7.5 minute topographic quadrangle) the grid lines are 1000 meters apart; north or south the spacing between grid lines is 1000 meters.
The coordinate values are known Easting’s (vertical lines) and Northing’s (horizontal lines.)

Easting values increase moving from left to right and Northing’s increase from bottom to top.  Coordinate values are always positive.


 Every location will have a zone identifier.  On the map above the zone is linked to the Easting value and is the first set of numbers.  In this case the zone identifier is the number 10. 


 
 The letter “T” seen above is a secondary, horizontal (east-west) identifier.  I personally pay little attention to it in my backcountry trips.

All USGS maps identify the zone in the title block at the bottom left of the map.  Note that on some commercial maps the UTM zone identifier may not be in the title block and can be hard to find.

The UTM coordinate can now be refined to a meter.  Again the spacing between the grid lines is 1000 meters (1 kilometer).  On the maps below, the tick marks between gridlines are in increments of 100 meters.  The hiker can then interpolate the distance between the tick marks.  



The position of the large X on the map above would be described as:

            10 5 25 270 East (the green line)

            47 91 180 North (the red line)

The final three places will always be expressed (10 5 25 270 East.)  The value 2 is in units of hundreds, the 7 is in units of 10 and the 0 is in units of 1’s.   Thus, 50 meters would be written as 050. 

Every point on a map (e.g., a mine, an intersection, a camp site, etc) can be described using UTM coordinates to the accuracy of one square meter.

I recommend consider carrying a small plastic ruler or other suitable straight edge when accuracy is important.  For general hiking and backpacking, one can quickly estimate a current position in the backcountry without other map tools.

UTM coordinates of a destination taken from a map can be easily saved on a GPS receiver.  For example, to do this the hiker “marks” a waypoint and then moves the backlit bar (yellow shaded area) from “save” to the “location” data field.  The “location” data field is then edited per the receiver’s instruction manual.

  





A fine reference for more practical information about UTM grid is Lawrence Latham’s book GPS Made Easy.  Chapter 5 has an easy to understand tutorial on this grid system; that’s how I learned it.