On the final approaches to Kisumu the line passed through a significant sugar cane growing region. Sugar processing factories were set up in two locations along the line – Chemelil and Miwani. Both these locations were provided with short branch-line connections to the main Nakuru to Kisumu line. Both of these branch-lines are shown on the 1:250,000 OS Maps from the second half of the 20th Century.  The extract below is taken from an image file very kindly sent to me by James Waite.
Chemelil Railway Station was 26 miles East of Kisumu and was mentioned in Part 10 of the main series of articles about the Uganda Railway which can be found on this link:
Chemelil Railway Station. 
The short branch-line to Chemelil Sugar Factory left the mainline just to the Southeast of the Station beyond the C37 road. The next image shows a trip-working on the branch-line in the 1970s.
The branch travelled over relatively flat land, its junction with the mainline is shown on the first satellite image below it is followed by a series of satellite images which follow the line of the branch.
The Mainline to Kisumu travelling Northwest from Chemelil Railway Station followed a straight line to Kibigori. The next two images are taken just a short distance to the Northwest of Chemelil Station.
Kibigori Railway Station was only a short distance Northwest along the mainline beyond the Nyando River. The adjacent photograph shows the station building. 
Leaving Kibigori, the line now travels due West to Miwani and then on to Kisumu.
Miwani Station building is shown below, the Sugar Factory branch-line left the mainline just to the East of the station and ran directly to the Sugar Factory. Subsidiary lines spread out at the factory to serve close-by cane fields. It is interesting to note that there were also a series of more temporary light tramway lines in use, as explained below.Miwani Railway Station Building. 
The route of the branch-line is shown on the satellite images that follow:
Miwani Sugar Factory was once named the Victoria Nyanza Sugar Company and was one of the earliest plants of its kind in Kenya. The notes which follow are gleaned from a paper written by Godriver A. N. Wanga Odhiambo, “Colonial Sugar Production in Nyanza: (Kibos-Muhoroni) The Asian Initiative, The Genesis, and
Development of Kenya’s Sugar Industry, 1903-1963.” 
Given the problems of transporting sugar cane along relatively poor roads The Victoria Nyanza Sugar Company set up an alternative means of transport to the raods and the heavier metre-gauge lines. Large-wheeled metal containers were moved around the sugar cane estates on the Company’s own trolley or tramway lines. This network required its own ordinance, (the Victoria Tramway Ordinance No.1 of 1922). This ordinance was introduced specifically to enable the company to convey sugarcane from the neighboring farms to the factory on trolley lines which were drawn by small locomotives. [10: p205]
Wanga Odhiambo says that “a tramway was built in 1923 by the Victoria Nyanza Sugar Company, starting on its own estate and running along a line of a public road, and terminating at the Kibos railway station.” Wanga Odhiambo [10: p206] If this is correct, the trolley way would have followed the line of the C34 road which appears in the satellite images above and would probably have been an extension to the short length of line that appears on the satellite image above.
Wanga Odhiambo also comments that: “According to the agreement between the Victoria Nyanza Sugar Company and the railway, the company was allowed the use of the railway siding line from Miwani railway station to the company’s nearby sidings. This was meant to be used for light trolley conveyance; thus the railway provided the engine for use of the trolley.” [10: p206]
“Farmers were expected to allow feeder lines to be laid and maintained in their fields for transport of cane from the adjoining farms by extension of the feeder line. Farmers also had access to portable tramlines which were connected to the nearest mainline and when not in use these were removed and returned to the nearest mainline. This arrangement by the Kenya-Uganda Railway facilitated the transportation of cane from the farms to the factory, but again it could only help those farmers whose farms were near the railway line, since the feeder lines were not very long.” [10: p207]
The cost of using the mainline was high and only 8 wagons were provided by the Uganda Railway per day for moving cane along the mainline. The result was quite an extended network of trolley lines being created to enable cane to be transported to Miwani from as far away as Chemelil.
The majority of these tramways/trolleyways have left little evidence of their existence, they were light and easily moved and they were often moved to suit the needs of farmers.
- Modern versions of the 1:250,000 Map of Kenya can be sourced from a variety of online sales sites. This extract can be found on Map No. SA-36-04.
- http://www.savetherailway.com/scenes, accessed on 24th May 2018.
- https://www.pinterest.com/pin/554083560377608216, accessed on 25th May 2018.
- http://www.mccrow.org.uk/eastafrica/eastafricanrailways/NairobiKisumu.htm, accessed on 22nd March 2021.
- https://www.facebook.com/permalink.php?id=248578828508174&story_fbid=3961245473908139, accessed on 24th March 2021.
- https://nation.africa/kenya/life-and-style/saturday-magazine/bitter-sweet-railway-tales-920850, accessed on 22nd March 2021
- http://lastdanceinkaloleni.co.ke/save-the-railway-exhbition/kenya-miwani-railway-station-1-of-1-4, accessed on 22nd March 2021.
- https://www.internationalsteam.co.uk/safari/kenya314.htm, accessed on 22nd March 2021.
- https://www.google.co.uk/maps/place/Chemelil+Railway+Station/@-0.1059847,35.111779,3a,75y,90t/data=!3m8!1e2!3m6!1sAF1QipOswTA_nt0PRTN_1v6oYXNZrtHhPp95MV0Ifcm4!2e10!3e12!6shttps:%2F%2Flh5.googleusercontent.com%2Fp%2FAF1QipOswTA_nt0PRTN_1v6oYXNZrtHhPp95MV0Ifcm4%3Dw203-h270-k-no!7i1920!8i2560!4m5!3m4!1s0x182a85c2400ef241:0x40029cd4350e8b0a!8m2!3d-0.1059847!4d35.111779, accessed on 23rd March 2021.
- Godriver A. N. Wanga Odhiambo; Colonial Sugar Production in Nyanza: (Kibos-Muhoroni) The Asian Initiative, The Genesis, and Development of Kenya’s Sugar Industry, 1903-1963; West Virginia University; Chapter 5 p199-228; accessed via https://researchrepository.wvu.edu/cgi/viewcontent.cgi?article=4567&context=etd, on 24th March 2021.