3rd one card nut flush on river; call or fold?

[oli1980]

<font color="blue"> Here I wasn't sure if should call or fold. I am getting 2:1 and if a J high Flush playes the same the call is correct... Is this call +ev or -ev?
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Prima Network No-Limit Hold'em, $0.50 BB (4 handed) Hand History converter Courtesy of PokerZion.com

SB ($47.24)
BB ($104.66)
UTG ($40.83)
Hero ($80.22)

Preflop: Hero is Button with K[img]/images/graemlins/diamond.gif[/img], Q[img]/images/graemlins/club.gif[/img].
<font color="#666666">1 fold</font>, <font color="#CC3333">Hero raises to $2</font>, SB calls $1.75, <font color="#666666">1 fold</font>.

Flop: ($4.50) 3[img]/images/graemlins/club.gif[/img], 9[img]/images/graemlins/club.gif[/img], 9[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
SB checks, <font color="#CC3333">Hero bets $3.25</font>, SB calls $3.25.

Turn: ($11) 2[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
SB checks, Hero checks.

River: ($11) 8[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">SB bets $11</font>, Hero calls $11.

Final Pot: $33