Map, Compass & GPS

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

Monday, June 5, 2017

Your Personal Outdoor 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 my web site.  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.



Today, while reading a Linkedin email, I received a tip on what might be the most complete plan yet.  It's from Paul Kirtley's blog.  He is an  experienced bush craft author in the UK.  This plan is much like the hiker's flight plan.  It includes a place for a picture of the hiker, data for one's route and much more.



Check out Paul Kirtley's plan here.



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.

Topographic Maps



Reviewing a topographic map is usually the starting point for the planning of any back country trip.  A topographic map is your road map to the outdoors.  It provides you information at a scale that is meaningful and detailed.  

For years, the US Geologic Survey (USGS) has been the principal publisher of accurate maps.  Within the last decade we have seen many innovations in mapping products that include new mapping companies and publishers, software, maps for the GPS, and “Apps” for the smart phone.


Still, the USGS map remains the standard for back country navigation (visit the USGS’s site at www.topomaps.usgs.gov.)   I’d also recommend looking at June Fleming’s “Staying Found” or Bjorn Kjellstrom’s “Be Expert With Map & Compass.”  Once you develop a map foundation you will easily shift to many of the other products on the market today. 

Many publications, videos, and web sites will give you a complete rundown on the features, symbols and components to a map.  The key features that you should be aware of are:


·         Contour Lines These are the thin brown lines that snake across the map.  Contour
lines connect equal points of elevation such that every point on a specific line will be at that elevation above sea level.  Visually, the contour lines give you a mental three dimensional view of the terrain.  These lines provide shape and a sense of texture.  Contour lines provide a view of slope and pitch, depressions, ridge lines and level ground; the highs and lows of the earth’s surface.  There are two primary types of lines, index and intermediate lines.  Index lines stand out as they are a touch wider, a darker shade of brown and indicate the elevation with numbers such as 4500; the elevation is in feet.  Between the index lines are the thin intermediate line that are spaced uniformly and further define the elevation, slope and contour.  The distance intervals between the intermediate lines are specified at the bottom of the map adjacent to the scale data.



·         Scale Consider scale as your view of the map; it is like your “overhead zoom” setting.  To cut to the chase, a 7.5 minute map or quadrangle has a scale that is referred to as 1:24,000; where one inch is equal to 2000 feet.  It is your best source of information of the back country.  At this scale, the map has much more validity and provides more usable information for your backcountry planning.  You can view important landmarks, streams and geographic features.  To complete the navigation picture I always refer a second map, such as a map of the national forest (e.g., the Deschutes National Forest.)  Commonly, such a map will be “zoomed” way out and have a scale of 1:100,000 or 1:250,000.  Imagine that such a map would be made up of many 7.5 minute quadrangles.


·         North  Features on a map such as trails, roads, mountain peaks and streams are all laid out in relation to true North; the North Pole.  The north-south borders of the map and the small declination diagram are your best references for true North.  Other grid lines (such as the red Township, Section and Range lines) may not be aligned to true north at all.  Be careful of these lines should you need to triangulate your position on a map.


·         Declination This is the angular difference between true North and Magnetic North.  The red needle on your magnetic compass points to Magnetic North.  The accuracy of the information found in the Declination Diagram is dependent on the age of the map.  To get the latest declination for any area visit www.magnetic-declination.com.

Personally I use a magnetic compass that I can adjust for declination; it just makes my navigation easier.  When adjusted, my compass provides bearing information in degrees true as does my map and my adjusted GPS.


·         Coordinates Latitude and Longitude (Lat/Long) are the familiar coordinate system to most outdoorsmen and women.  Coordinate data is found at the top and bottom corners of each map.  Lat/Long coordinate increments are also found every 2’ (minutes) and 30” (seconds) on the sides of the Map.  A scaling device is necessary to pull complete coordinates off a map; this is a pain.

In the 1940’s a coordinate system known as Universal Transverse Mercator (UTM) was developed.  To keep a very long story short, your 7.5 minute map has a new grid laid over it, the grid dimensions are 1000 meters by 1000 meters.  For more complete information on UTM grid visit the USGS’s web site UTM or Letham’s “GPS Made Easy” (which is probably at your local library.)


Simplicity is the essence of UTM.  Scouts, hunters and hikers have joined Search and Rescue (SAR) teams around the country in using this system. 

Your GPS receiver can easily be switched to UTM from the set-up menu.


·         Bar Scales   Notice the bar scales at the bottom of the 7.5 minute map.  The scales provide measuring data in miles, feet and meters.   On the far left side of the meter scale, the scale is broken down into units of 100 meters, this applies directly to UTM.

Notice on the scale bar (feet) that 1 inch equals 2000 feet.


 Map Datum Information about map datum is found in the lower left corner of a 7.5 minute map.  I have found that the simplest definition from GPS maker Garmin is:

“A math model which depicts a part of the surface of the earth. Latitude and longitude lines on a paper map are referenced to a specific map datum. The map datum selected on a GPS receiver needs to match the datum listed on the corresponding paper map in order for position readings to match.”



The bottom line: most 7.5 minute maps are made to the North American datum of 1927 (NAD27 or NAD27 CONUS on your GPS).  New GPS receivers are set to datum WGS84.  The difference between the datum could be over 100 meters/yards.  The solution: When pulling points off a map shift your GPS’s datum to match the map. 



If precision is not an issue for your outing don’t worry about datum.



Visit www.worldofteaching.com/powerpoints/geography/Mapping.pptThis power point presentation offers a fine overview of topographic mapping.  It’s free.




Sunday, June 4, 2017

Is Your GPS Receiver Set-up Correctly?


Setting up the GPS receiver is key to accurate navigation.  The phrase "match the map" is a big first step. 


Therefore, ensure that the GPS receiver's default settings correspond with key factors on the map.

  
A selection of such factors includes:
  • Set the compass page to working in degrees true rather than magnetic.
  • Position format/cordinate Systems (e.g., UTM Grid or Latitude and Longitude.)
  • Use the correct map datum.

 Note that every time the GPS receiver’s batteries are replaced, the electronic compass needs to be calibrated.  It’s a simple process that requires a quick check of the owner’s manual.

Both the compass and GPS receiver must be set to complement each other.  For example, if the hiker has a basic base plate compass (one that cannot be adjusted for declination) then the GPS receiver’s “north reference” must be set to magnetic.  If the hiker has a compass adjusted for declination then the receiver should be set to true north.  If compass and GPS receiver don’t match then the bearing information may be as much as 10° to 20° off.  That is not good.

I carry a Sylva Ranger style compass that can be adjusted for declination.  Before leaving home I visit www.magnetic-declination.com to verify the correct declination for my planned hunt location.  With that information I adjust the compass.  Yes, the magnetic needle still points to magnetic north but the rotating dial provides degree/azimuth information in degrees true.  
Now my GPS and compass settings match my topographic map. 

Wednesday, May 24, 2017

Snake Bite

A very interesting article about a potential break through in dealing with snake bites.


Nice work by the University of California at Irvine.


snake bite

Wednesday, May 10, 2017

Why Every Hiking Trip Needs a Hammock


Why Every Hiking Trip Needs a Hammock


When you think about packing up your hiking gear, you might think about bringing along your first aid kit, your water bottle and a few other necessities. Although these things are obviously important, you might be missing one thing that can make hiking way more fun: a hammock. These are a few reasons why every hiking trip needs a hammock.


They're Easy to Carry Around



When you're packing for your hiking trips, you might like to do what you can to keep your pack light. This makes a lot of sense, since a heavier backpack can make a big difference in how difficult your hike is. Plus, you probably want to save room for necessities. This means that you might not add in many items that you don't consider must-haves.


Luckily, though, a hammock can still fit in nicely. If you purchase a hammock that is designed for hiking and camping, you might be surprised by how easy it is to fit into your backpack without adding a lot of extra weight. It's a great way to bring something fun without getting in the way of your weight limit, and it should fold up easily enough that it does not take up a whole lot of extra space, either.


They Can Be Used Almost Anywhere



One great thing about hammocks is that they are so versatile that you can use them just about anywhere if you are creative enough. If you are going to be staying in a camp site, you should be able to use stakes or posts as a means of putting up your hammock. If you're going to be hiking in the woods, you should have no problem finding two trees that you can string your hammock in-between. You can always bring along posts that you can use to put up your hammock, but depending on where you are hiking, this should not be necessary. In general, hammocks are pretty versatile and can be used in a variety of places.


They Provide the Perfect Relaxation Spot



Hiking is hard work. Sure, you might be planning on going on a hiking trip so that you can achieve your fitness goals, but you deserve to relax a little bit as well. Plus, if you are able to relax well during your rest times, you'll be able to achieve even more goals when you get back to hiking again.


Even though a plain old camping chair might provide you with a place to sit and rest, you probably aren't going to find it to be as cool or comfortable as a hammock. Few things can actually be as enjoyable as kicking back in a hammock in a beautiful spot in nature, particularly after a long day of hiking. You can even create a campfire and break out your e cigarette starter kit and start vaping to make things even more relaxing.


The truth is that once you try relaxing in a hammock on one of your long hikes, you'll probably never want to relax in a regular camping chair again, since you probably won't find it to be quite as comfortable or relaxing. Plus, there's a good chance that other hikers on the trail will find themselves to be quite jealous and will wonder why they didn't think to bring a hammock along themselves!


If you are into hiking but don't yet have a hammock, you may want to consider investing in one. You can find them at many outdoors stores, and once you have one, you're sure to wonder how you ever went hiking without one in the past.



Monday, May 8, 2017

Fire Starter

Last week my friend and fellow blogger Leon  Pantenburg came to my wilderness survival class and held a presentation on fire starters.  Fire starters are a combination of equipment and process to start fire in an emergency situation.

The highlight was when Leon used flint, steel and char cloth.  Flint, steel and char cloth were the tools to create a spark.  The char cloth captured the tiny spark and began to ignite a very small section of the char cloth.


Char cloth is made from all cotton material (e.g., blue jeans) that is placed in a small container and is essentially cooked for 5-10 minutes.


Take a look at Leon's video or visit his blog at www.survialcommonsense.com


Leon calls char cloth a miracle material for making a fire.


When I head out into Oregon's backcountry I have a small pack that contains the basics of the 10 essentials.


Among the many components in my pack is a small (sandwich size) zip lock plastic bag containing my fire starter.


For fire starting I carry a water tight container filled with Storm Proof matches, a "metal match", cotton balls saturated with petrolatum jelly, Bic lighter and flint, steel and char cloth (about six or seven pieces.)

From Left to Right - Steel striker, two pieces of char cloth, and a quarter
 give perspective to char cloth size.  Outdoor Quest/Blake Miller image. 





Wednesday, May 3, 2017

Snakes In The Backcountry

Are you ready for rattlesnakes?  The following post is from a site that I just found a few years back.  This is great info as you head into the backcountry.



Be Rattlesnake Safe

05/22/13 -- As warm weather returns, 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.