
Don’t hike in one direction until you are tired or dehydrated and then turn back; you don’t want to be at the half-way point exhausted and without water. Don’t hesitate to ask other trail users for water. Look for MSC Stewards in their light-blue shirts, or the yellow-shirted Bike Stewards.
Water
Set out the amount of water that you think you’ll need and then double it; even when the weather is cool, the desert dryness causes evaporation. If your dog is accompanying you, remember that it needs just as much water as you do. Our volunteers regularly give their own water to hikers or their dogs. We cannot stress the importance of carrying water enough.Whistle
The sound of a whistle will travel farther than a cry for help. making it a valuable safety aid. When dehydrated or injured, people often can't shout or yell. There are documented cases of rescuers passing within yards of the person they are looking for yet weren't aware of their presence because the person was unable to call out.Trail Map
Preserve trail maps are available in MSC's office, the City of Scottsdale Website, the Scottsdale Convention and Visitor’s Bureau and numerous Arizona trail guides. There are map boards at many of the Preserve's trailheads.Cell Phone
The best thing to have in an emergency is a cell phone.
A GPS Unit
A regular outdoor recreationist should invest in a GPS unit. Even the most inexpensive one will serve the purpose of identifying your location. Our shop on this website offers a good quality, inexpensive unit.
Nails scissors, pliers, and tweezers
Cacti can't fly, shoot or in any way leap onto you, but if you brush against one chances are you will come away with spines. The worst offenders are members of the cholla family. The spines of these plants have barbs that can prevent them from being easily removed. Sometimes a stem will pull off with the spine.
Here are steps for removing cactus spines:
For small spines without cactus stems attached
•Pluck them out with the tweezers.
For large spines with cactus stems attached
•Use the nail scissors to cut the spines that are connecting the
cactus stem to you.
•Use the pliers to pull out the spines.
Tell someone where you are going
Before you hike, mountain bike, ride horseback or go rock climbing, make sure someone knows where you are going and when you expect to return. 
Wear the right clothing
It may seem contradictory, but the more coverage you wear, the less you will be affected by the heat. Lightweight pants and a long-sleeved shirt are the best things to wear while hiking. A lightweight hat with a wide brim is a must. Boots or heavy walking shoes are highly recommended.
Know what to do if you need help
Use your GPS unit to find exactly where you are. Call 911 on your cell phone and tell them the coordinates.
If you don’t have a GPS unit, the emergency markers on every trail sign will help guide rescuers to your location.