Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_name_11 (water_depth VARCHAR, entered_service VARCHAR, name VARCHAR)

### Question ###
What was the water depth that entered service in 2001 named Cajun Express?

### Accurate SQL ###

SELECT water_depth FROM table_name_11 WHERE entered_service = "2001" AND name = "cajun express"