Nov 14 (Reuters) -Basis bids for soybeans and corn shipped by barge to U.S. Gulf Coast terminals sagged on Thursday, reflecting sliding costs for barge freight on Midwest rivers, traders said.

* Rains since late October have lifted water levels on Midwest rivers, hastening the movement of grain barges toward the Gulf and allowing for heavier loads on fewer barges. BG/US

* CIF Gulf basis values declined even as Chicago Board of Trade soybean Sv1 and corn Cv1 futures fell to one-week lows, curbing sales of grain by farmers into river elevators that ship supplies to the Gulf. "Farmers did not like the lower basis," one merchandiser said.

* CBOT futures were pressured by strength in the U.S. dollar .DXY and worries about a slowdown in demand for biofuels under the incoming administration of U.S. President-elect Donald Trump. GRA/

* At the Gulf on Thursday, CIF soybean barges loaded in November traded at 88 cents over CBOT January SF25 futures, down 7 cents from Wednesday's trades, and were re-bid at 85 cents over futures, down a nickel from Wednesday's last bid.

* CIF December soybean barges traded at 86 and 85 cents over futures and were re-bid at 84 cents over futures, down 3 cents from Wednesday's bid.

* FOB export premiums for soybeans shipped out of the Gulf in December were steady at around 117 cents over futures.

* For corn, CIF barges loaded in November were bid at 79 cents over CBOT December CZ24 corn futures, down 1 cent from Wednesday. Bids for December corn barges were unchanged at 81 cents over futures.

* FOB offers for December corn shipped out of the Gulf held at around 112 cents over futures

* The U.S. Department of Agriculture's weekly export sales report is delayed until Friday due to Monday's federal holiday.

* Under its daily sales reporting rules, the USDA confirmed private sales of 176,000 metric tons of U.S. soybeans to undisclosed destinations.

Reporting by Julie Ingwersen in Chicago

For displays of CIF basis, click on the codes in brackets: U.S. CIF Gulf soybeans GRYM U.S. CIF Gulf corn GRYN U.S. CIF Gulf SRW wheat GRYO U.S. CIF Gulf HRW wheat GRYP
For displays of FOB basis, please click on the following codes in brackets: U.S. FOB Gulf corn GRZC U.S. FOB Gulf soybeans GRZD U.S. FOB Gulf SRW wheat GRZE U.S. FOB Gulf HRW wheat GRZF LINKS Corn prices page: cpurl://apps.cp./cms/?pageid=corn-cash-market
Wheat prices page: cpurl://apps.cp./cms/?pageid=wheat-cash-market
U.S. barge freight BG/US
U.S. export sales estimates USDA/EST
U.S. grain export summary GRA/U
Brazil soybean export prices SYBS
Brazil corn export prices SYBX
Argentina grain prices GRA/ARG
Russia grain prices GRA/RU