CARGO WDB HAS LOW FUEL CONDITION. DECLARES EMER.

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DURING THE FLT FROM THE W COAST; WE CONTINUED TO OVERBURN OUR FLT PLAN FUEL. THIS WAS DUE TO WT; TEMP; WIND; AND DEVIATING AROUND CONVECTIVE WX. 1 HR 40 MINS PRIOR TO LNDG WE ADVISED DISPATCH OF THE SIT. 1 HR PRIOR TO LNDG; WE CALLED AGAIN AND REQUESTED A FUEL STOP. OUR FIGURES SHOWED WE WOULD ARRIVE WITH 1 HR FUEL REMAINING; NOT ENOUGH FOR ALTERNATE AND RESERVE. DISPATCH REQUESTED THAT WE PRESS ON TO DEST; THEY WOULD CALL ZID AND DAY APCH AND GET US PRIORITY HANDLING. WE ADVISED ATC WE WERE 'MINIMUM FUEL.' UPON ARR IN THE TERMINAL AREA DAYTON ADVISED THAT WE WERE #6 FOR THE RWY AND THE FE ADVISED WE HAD 55 MINS OF FUEL REMAINING. I DID NOT WANT TO TAKE THE DELAY AND BURN ANOTHER 12-18 MINS OF FUEL; SO WE DECLARED AN EMER; WENT DIRECTLY TO THE FINAL AND LANDED. ALTHOUGH THE WX WAS GOOD; THIS IS A SINGLE RWY ARPT AND ARRIVING WITH LESS THAN 45 MINS FUEL LEAVES ONE WITH NO OPTIONS. CHIEF PLT WAS UPSET AT MY DECISION TO DECLARE EMER AND HINTED THAT DISCIPLINARY ACTION MAY FOLLOW. HE FURTHER STATED THAT HAD I FUEL STOPPED WITH THAT MUCH FUEL ONBOARD; I WOULD BE IN 'REAL TROUBLE!'