Definition of "undammed" [undammed]

• Simple past tense and past participle of undam. (verb)
• Not having been dammed. (adjective)

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• "Without untrammeled, healthy habitat and undammed, wild streams wildlife and fish suffer."
• "The Nujiang is the largest undammed river in China."
• "I learned that Sespe Creek is the last undammed i.e. - no dam river in Southern California."