The word hydrographical is playable in Words With Friends™, no blanks required. Because it is longer than 7 letters, you would have to play off an existing word or do it in several moves.
Words With Friends™ Letter Score: 30
Highest Scoring Words With Friends™ Play In The Letters hydrographical
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Seven Letter Word Alert: (37 words)
achiral, acholia, acridly, airdrop, airplay, apogaic, carload, charily, choragi, cordial, crayola, diarchy, diglyph, digraph, dipolar, glochid, glyphic, graphic, haircap, haplogy, haploid, hardily, holiday, hyaloid, orchard, paralog, payload, pharaoh, placard, polaric, prodigy, pyloric, radiary, radical, railcar, rapidly, ripcord