Which elections receive a high voter turnout and which ones receive a low turnout

Answer 1

Many other countries have a higher voter turnout than the U.S.

http://www.pewresearch.org/fact-tank/2015/05/06/u-s-voter-turnout-trails-most-developed-countries/

In the U.S., presidential elections usually have the highest voter turnout.

Answer 2

Voter turnout is lowest in local/municipal elections:

http://www.governing.com/topics/politics/gov-voter-turnout-municipal-elections.html