SB 10.65.27

evaṁ nirbhartsitā bhītā
 yamunā yadu-nandanam
uvāca cakitā vācaṁ
 patitā pādayor nṛpa
Word for word: 
evam — thus; nirbhartsitā — scolded; bhītā — afraid; yamunā — the presiding goddess of the river Yamunā; yadu-nandanam — to the beloved descendant of Yadu, Lord Balarāma; uvāca — spoke; cakitā — trembling; vācam — words; patitā — fallen; pādayoḥ — at His feet; nṛpa — O King (Parīkṣit).
Translation: 
[Śukadeva Gosvāmī continued:] Thus scolded by the Lord, O King, the frightened river-goddess Yamunā came and fell at the feet of Śrī Balarāma, the beloved descendant of Yadu. Trembling, she spoke to Him the following words.
Purport: 

According to Śrīla Jīva Gosvāmī, the goddess who appeared before Lord Balarāma is an expansion of Śrīmatī Kālindī, one of Lord Kṛṣṇa’s queens in Dvārakā. Śrīla Jīva Gosvāmī calls her a “shadow” of Kālindī, and Śrīla Viśvanātha Cakravartī confirms that she is an expansion of Kālindī, not Kālindī herself. Śrīla Jīva Gosvāmī also gives evidence from Śrī Hari-vaṁśa — in the statement pratyuvācārṇava-vadhūm — that Goddess Yamunā is the wife of the ocean. The Hari-vaṁśa therefore also refers to her as sāgarāṅganā.