PANEL 1 (make 2)
With A, ch 30.
Row 1: Work 2 sc in 2nd ch from hook, sc in next 5 ch, sc3tog, sc in next 5 ch, 3 sc in next ch, sc in next 5 ch, sc3tog, sc in next 5 ch, 2 sc in last ch - 29 sts (2 ripples) at the end of this row.
Rows 2-6: Ch 1, turn, 2 sc in first st, sc in next 5 sts, sc3tog, sc in next 5 sts, 3 sc in next st, sc in next 5 sts, sc3tog, sc in next 5 sts, 2 sc in last st. Change to B.
Rows 7-12: With B, rep Row 2 six times. Change to C.
Rows 13 and 14: With C, rep Row 2 twice. Change to D.
Rows 15 and 16: With D, rep Row 2 twice. Change to E.
Rows 17 and 18: With E, rep Row 2 twice. Change to A.
Rows 19-24: With A, rep Row 2 six times. Change to B.
Rows 25-42: Rep Rows 7-24.
PANEL 2 (make 2)
Make same as Panel 1 in the following color sequence: Work 6 rows with B, *2 rows each with C, D, and E, 6 rows with A, 6 rows with B; rep from * once more.
Alternating Panels 1 and 2, sew long edges of Panels together
Row 1: From RS, join A with sc in lower right hand corner of first Panel 1 and sc evenly across long straight edge. Fasten off. With B, work same edging across opposite side.
Round 1: From RS, join C with sl st anywhere along outside edge of Afghan, ch 1, work sc evenly spaced around entire outside edge of Afghan, working 3 sc at peak of each ripple and sc3tog over valley of each ripple; join with sl st in first sc. Fasten off.
Weave in ends.