Confidence: It's likely to be this, but I can't be certain.
Notes: This group of eggs was about 3cm long. There are tiny newly hatched insects emerging. Could it be dragonfly, or damselfly? The reed was drooping but closer to vertical than in my images, I had to steady it to get the picture. These eggs were on a reed in the water. Caddisflies and moths abound there also, are the eggs recognizable? Certain butterfly species also but as this is over the water, I thought probably an aquatic insects.