watercourses

"After the heavy rain, the river was flooding the nearby town. "

"Example Sentence: "After the storm, the authorities issued a warning about contaminated water." "

"The dry-stone wall used a large, flat through to support the top stones. "

"The new student was a natural from Japan. "

"The flowers were artificial, and he thought them rather tacky."

"The pipe is blocked."

"My teacher ensured me that I would pass the test if I studied hard. "

"The water coming out of the waterwheel created a standing wave in the channel."

"By now, you must surely know which is which."

"My parents didn't want me to go to the party, and neither did my friends. "

"The lightning caused thunder."

"Inspect the system for leaks."