Water loss due to evaporation

There are varying statistics about quantification of water loss due to evaporation from dams and lakes.

Figures range from 30% to 50% of loss of water which seems to be a gigantic problem at hand to address.

Can some one help with latest and authentic study about this topic? 

Taxonomy

• Water Loss Control
• Evaporation
• Water Conservation
• Water Footprint
• Water Conservation
• Water News

4 Answers

1. Hello. I did a small investigation on the subject, I found the attached the most serious and complete article. 

   https://www.e3s-conferences.org/articles/e3sconf/pdf/2019/23/e3sconf_form2018_05044.pdf

   1 Comment

   1. Thankyou for sharing a good article.

2. I have heard of the idea of floating solar panels, to reduce evaporation and produce energy at the same time.

   1 Comment

   1. Good idea

3. Using small ping pong balls that are common in the United States can be very costly for us.

   If you live in an area where there is oil pollution, you will find that there is always a layer of fat or hydrocarbon oil on the surface of the water, so this environmental experience should be used as an opportunity.

   In other words, to prevent wastage and evaporation of water from the surface of rivers, lakes and dams, you can look for new technology such as the production of a type of polymer or fat that when sprayed on the surface of the water and placed on the upper surface of the water as a coating It acts and prevents direct sunlight on the surface of the water, thus minimizing water evaporation.

   However, this polymer or fat should not affect water quality. Also, whenever you want to use that water for drinking or industry and agriculture, all you have to do is remove the water surface and take your water from the bottom layer, for example, 50 cm below the river and lake surfaces.

   In other words, you can insert the hose connected to the water pump in the bottom layer of the water surface and take the used water from a greater depth.

   1 Comment

   1. Thanks for your inputs.

4. The Penman Equation approximates the evaporation rate of water from lakes, etc. https://www.sciencedirect.com/science/article/abs/pii/0002157177900073.  We probably can't do much about said evaporation except to cover the lakes, etc., using the floating ping-pong ball coverage approach.

   There is, however, another serious water loss problem that we can begin to address, namely the loss of transported and processed/treated water from water mains.  (The 2016 American Water Works Association study revealed losses of 6.8 - 45.5%, with an average loss of 22.6%.)  Water mains are the oldest municipal infrastructures, and leakage from corrosion pits, cracks, joints frequently last for decades until becoming visible as surface water running down streets, potholes, etc.  Especially in view of worsening drought conditions due to climate change, such losses must be addressed by better measurement practices and volume/mass balance methods to detect, locate, and prioritize leakage. 

   1 Comment

   1. Transmission loss is a major concern. Do we have sensors technology which can detect and communicate the potential leakage spot in pipelines running across the cities?