The probability of being caught varies and depends on multiple factors including: the location where an individual attempts to cross, specific border security measures during that time, surveillance technology deployed, weather conditions or visibility factors such as darkness affecting surveillance operations, as well as resource allocation decisions made by enforcement agencies
Due to these multiple variable factors making predictions on the likelihood of successful or undetected crossings challenging.
Illegal crossings should not be attempted due to safety risks, associated legal consequences for unauthorized entrance of US, potential prolonged detention of undocumented and potential risk of separation with a parent or adult guardian for minors apprehended without authorized adult guardians at time of attempted border crossing or illegal entrance without inspection or authorization.