David Helms Profile picture
Bicyclist, Citizen Ped and Bike Advocate. Retired NOAA and USAF/AFWA (and AWS) meteorologist

May 30, 2023, 9 tweets

#KakhovkaReservoir #KakhovkaHPP
1/ Status Follow-up: 30 May 2023. Over-topping of #KakhovkaHPP dam continues, now occurring for a full month.

2/ Loop of several cloud-free Sentinel-2 passes of #KakhovkaHPP this month, latest 29 May 2023, show white turbulent flow downstream of sluice gates.

3/ @lhinnant published an article "Damage to Russian-occupied dam submerges Ukrainian reservoir island community" 25 May 2023 for @AP. Worth a read.
apnews.com/article/ukrain…

4/ Spatial context of @lhinnant story of the flooding of families in the village of Lysohirka, Zaporizhzhia, located on the farthest upstream portion, right bank, of the #KakhovkaReservoir.

5/ @riley_mellen and @heytherehaley also published an article for @nytimes on 17 May 2023 about #KakhovkaHPP water level. Article included a nice
#PlanetLabs image from 3 May 2023 clearly showing dam over-topping.

6/ #KakhovkaHPP image taken back on 11 NOV 2023 by @Maxar. Image was taken the day after Russian occupiers blew up the road and rain deck about sluice gates 26-28 (far left side of image below) to block UAF pursuit of RF forces retreating to the left.

7/ With the start of water over-topping #KakhovkaHPP dam late April 2023, #KakhovkaReservoir water level has ceased increasing, remaining between 17.36-17.55 meters (almost 2 meters above normal) since May 1st as indicated by @PoleTheia water level data from Sentinel-6 altimetry.

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