If I could fund a study, it might be a professional study of the Asmaks in the plain of Troy, including a live walking-scientist type search for evidence of human construction, such as cut banks, artificially lined banks or sluice gate remnants; along with a full description of length, depth, width, how much of its length is straight and how much is meander, etc. That could be done cheap, right? Has any professional ever walked the full length of the Kalifatli Asmak?
There are several historical descriptions of the Asmaks. They raise plenty of questions. I will review some of those below, then look at some maps, then discuss the whole thing.
The Asmaks are extensive. The main one is called the Kalifatli Asmak. Here are some remarks about it from Peter Forschhammer:
E. of the Mendere, and N.W. of the new Chiflik of Akchi Kevi, at the foot of three hills, in which a branch of the Chiblak range terminates, is a marshy lake, fed by springs called by the natives Judan (a water that never diminishes). From the Judan issue three Asmaks.* Two of these flow N. of W. towards the sea ; the third flows in an opposite direction, and falls into the Kimar-Su. ... The Kalifatli-Asmak does not come down from the mountains, nor does it fall into the Mendere, as has been erroneously represented by former topographers and map-makers. It issues from the Judan in the plain; and it is only during the period of the winter inundations that its waters mingle with those of the Mendere, and then in consequence of the latter overflowing and quitting their natural bed. P 31
*Asmak is a term applied to channels which contain running water in winter only, and standing pools in summer. The beds of the Asmaks in the Trojan plain are commonly cut by the water through the flat soil, so that in many places they are not visible before you reach the edge of the steep bank.
We now know that "the Judan" was an artificial swamp caused by a collapsed bridge across an Asmak, which blocked the flow of three springs. Frank Calvert removed the bridge and drained the swamp into the Asmaks. The source of the Asmaks is near the meeting point of Kemer Creek and the Mendere.
When Forschhammer says that two Asmaks take off to the NW, he is talking about the two arms of the Kalifatli Asmak which flow toward the sea. The other one, which we will call the Akshi Kioi Asmak, goes out the SW end of the swamp, heading toward the Kimar Su.
The Kalifatli-Asmak has a deep and very sharply-defined bed, from its source all the way down to the sea. In the month of August the water from the Judan does not preserve the character of a continuous stream further than about a mile from the lake. Lower down the channel was dry in some parts, and overgrown at the bottom with brushwood and rushes ; in others it was filled with pools of stagnant water. In the upper part the course of the river may be traced by the line of trees which borders its banks ; but in the lower part the bed is scarcely discerned before you reach the edge of its steep bank. P 30f
It has "a deep and very sharply-defined bed, from its source all the way down to the sea", and in the lower part of the plain, where it does not have trees along its banks, "the bed is scarcely discerned before you reach the edge of its steep bank". It appears to be "cut by the water through the flat soil, so that in many places they are not visible before you reach the edge of the steep bank".
Now for a remark from Walter Leaf's, Troy, A study in Homeric Geography (1912):
The banks of the Kalifatli Asmak are steep and sharply marked: they must be constantly renewed. No ancient banks could retain this shape through the numerous inundations to which they have been subject for so long a time. P 32
Like Forschammer, Leaf notes how steep and sharply defined the banks of the Asmak are.
Here is Heinrich Schliemann, from Troy and its Remains, 1875.
The Plain of Troy is traversed from the south-east to the north-west by the Scamander, which is distant from Hissarlik 30 minutes' walk, and the bed of which I can recognise from here by the uninterrupted row of trees growing upon its banks. Between the Scamander and Hissarlik, at a distance of only 15 minutes from the latter, the Plain is again intersected by the river Kalifatli-Asmak, which rises in the marshes of Batak (Thymbria), and is filled with running water only in late autumn, winter, and spring; but during the hot summer months, till the end of October, it consists of an uninterrupted series of deep pools. This stream, even during the continual heavy winter rains, and in comparison with its splendid and immensely broad channel, has but a very scanty supply of water -- in fact, never so much as to cover even the tenth part of the breadth of its bed. p 72
Schliemann says that "even during the continual heavy winter rains" the Kalifatli Asmak does not have enough water in it to cover a tenth of its breadth. It is that large and that well defined.
From Schliemann's, Ilios, the City and Country of the Trojans, 1880: In his reviews of several different water bodies, Schliemann writes:
(f) Of the Kalifatli Asmak—which, with Virchow, Burnouf, and Calvert, I hold to be identical with the ancient bed of the Scamander—I have already spoken at some length. It is enough to add here, that one arm of it rises in the Duden swamp on Mr. Calvert’s farm of Akshi Kioi, while another arm starts from the point where the Scamander and Thymbrius meet. The latter arm, which is broad and deep, brings at the time of the floods an immense volume of water from the Scamander, and joins the former arm at a short distance to the north of the Duden swamp. There can hardly be any doubt that this is the ancient bed of the Scamander. At a short distance to the north of the confluence of the Scamander and Thymbrius there is a second channel, and a little further on a third, through which the Scamander now sends its surplus waters into the Kalifatli Asmak. In all three channels, but particularly in the last one, may be seen countless trunks of uprooted trees, which have been carried down the stream by the force of the current. The Kalifatli Asmak has scarcely any current except in the winter months; in the dry season it consists of a long series of pools of stagnant water. P 99
This "broad and deep" arm that brings water from the Scamander during floods is the Akshi-Kioi Asmak. I've marked it on the map below, along with the silted up waterways he mentions.
In the above map from Schliemann, he has drawn the east end of the Akshi Kioi Asmak rather faintly, as if it is partially silted up like the other three waterways marked there. The eastern end of the Asmak reaches the Kimar Su.
On the map above from Thomas Spratt we again see the Akshi Kioi Asmak extending to the southeast toward Kanai Tepe, along with other apparently silted up waterways. Forschhammer reported a marsh south of Kanai Tepe.
On the map above, again from Thomas Spratt, we see the Akshi Kioi Asmak and two partial waterways drawn with dotted lines. One of these reaches Kemer Creek.
Forschhammer writes:
In the plain the bed of the [Kimar] river increases in breadth, and after passing the last height to the N. divides into three arms which re-unite near the Chiflik of Akchi-Kevi, where the water begins to re-appear at intervals. About 100 yards farther on the river passes through a little marshy wood called Baluk (a place for honey), at the lower end of which the channels of the Akchi-Kevi-Asmak meet those of the Kimar. The marsh was quite dry in the month of August; but a deep and well-defined bed, with a smaller one by its side, could be traced from it to the Mendere, through which the waters of the Kimar and Akchi-Kevi- Asmak find their way in the wet season. P 33
As Forschhammer sees it, the Akshi Kioi Asmak reaches Kemer Creek.
Observations
Not so long ago, the two branches of the Kalifatli Asmak met near the top of the plain.
The two branches also meet just above Kalifat, so the east and west branches formed a circuit.
Above the meeting point there was another section of Asmak that came down from Kemer Creek. This section was almost obliterated by the 1850-80s.
The eastern branch of the Kalifatli Asmak, which follows the contours of the Chiplak Ridges for almost 3 miles, if it was to continue this pattern, would continue around the ridge that Kalafat sits on, and then finally around the ridge of Hisarlik. However, it does not follow the ridges in the lower part of the plain and apparently never did. Instead, it flows into the plain below Kalafat, and then suddenly makes a 90 degree turn to the east when it encounters the large raised earth anomaly that also turns the Mendere to the west. This mound that turns two waterways is still unknown to science.
Thoughts
Many theorists, including Spratt, Virchow and Schliemann, think that the Scamander/Mendere made the channels on the east side of the plain. They call the Asmaks the ancient bed of the Scamander.
I think that didn't happen for several reasons.
In order to run on the east side of the plain, the Scamander, after meeting the Kimar, would proceed uphill to the higher, eastern edge of the plain. Water does not run uphill.
A river is unlikely to flow along the edge of a plain because the edge is elevated above the center of the plain.
Where there are two channels both Asmaks cut across a slope for their entire length, which is highly unusual.
Given the descriptions from both Schliemann and Forschhammer, there seem to be no natural levees associated with these channels. If that is the case, and there really are no natural levees, then the channels were never a significant source of flooding, and therefore were never the bed of the Scamander for very long. Any channel that is a perennial source of floods will build up natural levees along its banks by dropping its larger and heavier loads closer to the channel, and its lighter, smaller debris further away. Thus do rivers build their banks. If the banks are not built up, then the channel was never a significant source of flooding.
This also means that neither the Mendere nor Kemer creek carved the channel, because they both flood.
In low lying plains, and in gently sloped plains, like the plain of Troy, rivers are unlikely to cut down into the ground, and are more likely to form wide meanders and deltas. Hence the very depth of the channel and the fact that it is in a gently sloped coastal plain strongly suggests that it is artificial or mostly artificial.
The Asmaks are suspiciously deep, seem to have no levees along their banks, and cut across a slope on the raised edges of a plain for almost three miles. For these reasons, I believe they are artificial. They obviously never contained a river, so they must have been canals from the very start, as they are now.
Perhaps the whole thing started from the joining together of two oxbow lakes.
Questions
Question: Why have two Asmaks?
I mostly have thought of them as some kind of irrigation system. Two Asmaks are better than one because it means more water trapped or stored in canals, I suppose.
Question: Why are the two Asmaks so close to one another?
If they are manmade, why are they close together on one side of the plain? Why not put them further apart to bring water to more of the plain? The east branch is so far over that it can only irrigate from it's western side, because its eastern side is too close to the Chiplak ridge to irrigate much, plus it is uphill to that side. But its western side can only irrigate a small space because it is never far from the western branch.
Question: Why do they join at the top and bottom and form a circuit?
Perhaps they join at the top and bottom so that barges can go up one side and down the other without being taken out of the water. This would facilitate movement of persons and provisions up and down the plain. I don't know if one could row uphill in the plain, perhaps they used horses to draw a barge uphill.
I can't think of any other reason to form a circuit.
It is possible that we are looking at an incomplete project. Perhaps a third and fourth trench were planned but not completed, or perhaps there is another trench but it was obliterated before the 19th century.
Question: Would ancient people actually build that?
I think not. But what do I know?
Question: If the Trojans built this waterway in the bronze age, what was it for?
It could be flood control.
It could be irrigation.
It could be domestic water supply for a city in the plain; even if it is not drinking water, it can be used in metal working, toilets, animal hydration and other applications.
It could be for transportation of goods by barge in the plain.
Perhaps they held boat races on it.