OKA
| Date | Clue |
|---|---|
| 2012-01-06 | Volga tributary |
| 2009-05-02 | River to the Volga |
| 2008-11-20 | Volga feeder |
| 2007-03-04 | Volga feeder |
| 2006-04-30 | River in Irkutsk |
| 2005-09-13 | River to the Volga |
| 2005-06-04 | River in Irkutsk |
| 2002-10-13 | River to the Volga |
| 2002-10-10 | Russian river |
| 2001-12-28 | 900-plus-mile Volga feeder |
| 1996-03-22 | Volga feeder |
| 1995-04-21 | Volga tributary at Gorki |
| 1994-05-03 | Volga tributary |