Texas/United States Links Texas Commission on Environmental Quality (TCEQ) http://www.tceq.state.tx.us/index.html Texas SmartScape http://www.txsmartscape.com     Texas Water Development Board (TWDB) http://www.twdb.state.tx.us/ Texas Water Conservation Association (TWCA) http://www.twca.org/ US Army Corps of Engineers-Tulsa District http://www.swt.usace.army.mil/ County/Regional Links Texoma Council of Governments (TCOG) http://www.texoma.cog.tx.us/ Region C Water Planning Group http://www.regioncwater.org/ Lake Texoma Association http://laketexomaonline.com Red River Authority http://www.rra.dst.tx.us/ Grayson County http://www.co.grayson.tx.us/ Cooke County http://www.co.cooke.tx.us/     Fannin County http://www.co.fannin.tx.us/   City/Local Links City of Denison http://www.ci.denison.tx.us City of Gainesville http://www.gainesville.tx.us/ City of Howe-Chamber of Commerce http://www.howetx.org/ City of Sherman http://www.cityofsherman.org/ City of Whitewright-Chamber of Commerce http://whitewrightcc.com/ City of Whitesboro http://whitesboro.texoma.net/