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_93 ( structure_height_ VARCHAR, m VARCHAR, name VARCHAR, country VARCHAR, year VARCHAR, type VARCHAR )

### Question ###
What is the height of the fort peck dam which was built before 1968, is located in the united states and has a dam type of TE ?

### Accurate SQL ###

SELECT structure_height_ AS "m" FROM table_name_93 WHERE year < 1968 AND type = "te" AND country = "united states" AND name = "fort peck dam"