There are more words but they are from Tolkien's earlier conceptional periods. Tolkien likely changed these words as he evolved the aesthetics and completeness of the languages. You may even find languages that Tolkien later rejected. Do not mix words from different time periods unless you are familiar with the phonetic developments.
kelu-
verb. to flow
qelu-
verb. to well up
kelu(me)
noun. stream; fountain, spring
sindi
noun. river
A noun in the Qenya Lexicon of the 1910s glossed “river” derived from the root ᴱ√SIŘI [SIÐI] (QL/84). The same word appeared in the contemporaneous Poetic and Mythological Words of Eldarissa (PME/84).
siri-
verb. flow
síre
noun. stream
tuilére
noun. Spring
welme
noun. spring
welwe
noun. spring
Below: Tolkien's Late Period (1950–1973). These are from Tolkien's late conceptual period — his most settled forms of the languages. Prefer these over the earlier ones above when composing new text.
A verb glossed “well up” in the Qenya Lexicon of the 1910s derived from the root ᴱ√QEL+U, a variant of ᴱ√KELU (QL/76).