Can't get Drush to function I have a local site but drush doesn't seem to be functioning correctly:

$drush status=

PHP executable         :  /usr/local/bin/php                                      
PHP configuration      :  /usr/local/etc/php/5.6/php.ini                          
PHP OS                 :  Darwin                                                  
Drush script           :  /Users/myuser/vendor/drush/drush/drush.php           
Drush version          :  8.1.5                                                   
Drush temp directory   :  /tmp                                                    
Drush configuration    :                                                          
Drush alias files      :  /Users/myuser/.drush/sitename.aliases.drushrc.php 


It's not listing anything about the drupal site, so I can't run any drush commands on the local. 

Does anyone know how to set this up correctly?
I'm reporting back to provide my solution.

The site itself was Drupal v 7.51. As you can see, I was using Drush v. 8.1.5.

Reverting back to 7 corrected the issue and was done fairly easily following the modules unraveled tutorial here: https://modulesunraveled.com/blog/install-drush-7-and-8-and-automatically-switch-versions-based-project.

Regards