Tirusew Asefa, Ph.D., P.E., BC.WRE., F.ASCE Profile picture
#Climate #Water 💦 music (guitar and djembe) || Fulbright Specialist || 2024 Bikila Award winner.
Mar 2 4 tweets 2 min read
How insane is the urban #water shortage and expensive the parallel market in #AddisAbaba?

Lots of people in multi-story buildings rely on the parallel market by buying jerrycan of water delivered to their floor at an astronomical price, which is getting worst by the day.
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So, we crunched the numbers and compared them with what we pay here in the US.

Using several scenarios of the cost of a jerrycan of water and $ to Birr exchange rates, we found:
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Aug 12, 2023 8 tweets 2 min read
#GERD 4th filling looking amazing. The last three months have been running anywhere 150 to 200% above normal rainfall, more in some areas. This allowed significant flow with soaked watershed.

Recent info says we are half way there.. for the year!
August is not done yet👍😀.
1/8 Image When it is all said and done, #GERD filling will be an academic learning opportunity on how to fill a mega dam with minimal downstream impact for the world.

That starts from the design that allows to have construction to go along with filling unlike we have seen before.
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Jul 25, 2023 4 tweets 2 min read
Thanks @althecat for sharing those forecasts which look promising. Appreciate you letting readers about this being forecast👍

On top of the forecasts you shared, observations so far in June and July (through July 22) are running 150% to 200% more than normal. Which is great.
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Is this year as wet as 2020? No.

2020 was a once in 100-yr event. Chance of having hundred year events twice in 3-yrs is very small.

But this year is running well ABOVE average and should be easy for #Ethiopia to accomplish 4th filling with no significant downstream impact.
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Jul 20, 2023 7 tweets 3 min read
As we go through a renewed negotiation among #Egypt, #Ethiopia and #Sudan on #GERD, I will be highlighting what the major issues were and what can we expect on upcoming “negotiations on steroid”.

Something they try to accomplish in four-months that they couldn't in >10 yrs.
1/7 Image 📢I will also have an article that is coming up soon on this same issue in more details.

In the meantime, here is where we are. I will reference what was said and where they are today. Setting the negotiations records straight.

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Jul 12, 2023 11 tweets 3 min read
This article is interesting for those who follow closely what is going on in the #Nile Basin and the Grand #Ethiopian Renaissance Dam (#GERD) situation.

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thenationalnews.com/mena/egypt/202… If you just pass over the usual media propaganda that says #GERD will wipe out “hundreds of thousands of agricultural jobs” in #Egypt while it is a developmental project for #Ethiopia. not an existential issue for 65 million people, a lot to unpack.

Let's take a look.
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Jul 9, 2023 8 tweets 2 min read
Lots of misinformation on the 4th filling of #GERD after #Ethiopia’s PM briefing on this the other day. Below is my interpretation.

Note: I have no insider information. Just looking at hydrology and what we see in the ground related to status of #GERD construction.
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What the PM said via national TV:
➡️This year we expect the filling will continue until end of August or beginning of September and we are insuring the needs of #Egypt and #Sudan
➡️Our next question is how we can create Joint Multipurpose Projects rather than arguing on #GERD
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Mar 26, 2023 26 tweets 20 min read
The Grand #Ethiopian Renaissance Dam (#GERD).

A thread. If you happen to look at the news in the last couple of weeks about it, you will find a lot.👇

For the casual reader, what these news articles Don't tell you WHY exactly #Egypt and #Ethiopia are locked in these bitter disagreements over the #Nile water use via the #GERD.
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Mar 19, 2023 8 tweets 6 min read
Do you know this about #AddisAbaba's #water supply history?

1⃣ #AddisAbaba is located near a major watershed divide at the upper most catchment of Awash river basin
2⃣A number of small catchment rivers starts from #Entoto ridges & depressions as springs (cold and thermal)
1/8 ➡️#AddisAbaba was founded in 1870s, taking into consideration of these springs as its major #water supply to start the history...

➡️The first water supply source of the city was groundwater. Not a whole lot of documentation on water use amount on that I could find.
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