Has the water become lighter?
Figuratively: Has the flood ceased? By implication: Has the situation eased?
("And he sent forth the dove from him to see if the waters were abated from off the face of the earth" - at the beginning of Genesis 8 (about Noah in the ark), and so: "Behold, thou/ Jonah, which I sent forth to see/ whether the waters were abated/ and if the whole generation and the sin were gone" - Jonathan gave songs to the dove)
Translation
Expression (Hebrew)
הֵקֵלּוּ הַמַּיִם?
Definition (Hebrew)
בִּמְלִיצָה: הַאִם הַשִּׁטָּפוֹן פָּסַק? בְּהַשְׁאָלָה: הַאִם הוּקַל הַמַּצָּב?
("וַיְשַׁלַּח אֶת הַיּוֹנָה מֵאִתּוֹ לִרְאוֹת הֲקַלּוּ הַמַּיִם מֵעַל פְּנֵי הָאֲדָמָה"- בְּרֵאשִׁית ח ח (עַל נֹחַ בַּתֵּבָה), וְכֵן:"הִנֵּה מָה שֶׁאַתְּ/ יוֹנָה שֶׁשִּׁלַּחְתִּי לִרְאוֹת/ הֵקֵלּוּ הַמַּיִם/ וְאִם תַּם כָּל הַדּוֹר וְהַחֵטְא"- נָתָן יוֹנָתָן/ שִׁירִים לְאֵת)