Limor Gilead (asker) Jul 4, 2008:

thank you for all your input, Smantha

Smantha Jul 3, 2008:

Well, according to the Academy, "contact spring" is מַעְיַן שְׁפִיעַ אַלּוּבִי and they also provide English synonyms to "contact spring": alluvial slope spring, boundary spring, border spring, contact spring.

Limor Gilead (asker) Jul 3, 2008:

I've been informed it's a "contact spring"