From 
http://law.optima.ru/View.html?0=42267&1=1 (translated by me):
GOVERNMENT OF THE RUSSIAN FEDERATION
DECREE
August, 6, 1998, no. 891
Moscow
On the reaching of an Agreement between the Government of the Russian 
Federation, the Government of the Chinese People's Republic, and the 
Government of the Korean Democratic People's Republic on the 
definition of the line of delimitation of the boundary water areas of 
the three countries on the Tumannaja river.
The Government of the Russian Federation decrees:
To approve the draft, presented by the Ministry of Foreign Affairs of 
the Russian Federation, in agreement with the Ministry of Defense of 
the Russian Federation, the Federal Boundary Service of the Russian 
Federation, and the Ministry of Justice of the Russian Federation, of 
the Agreement between the Government of the Russian Federation, the 
Government of the Chinese People's Republic, and the Government of 
the Korean Democratic People's Republic on the definition of the line 
of delimitation of the boundary water areas of the three countries on 
the Tumannaja river (annexed to this decree).
To instruct the Ministry of Foreign Affairs of the Russian Federation 
to sign the said Agreement in the name of the Russian Federation, 
following the reaching of an agreement with the Chinese and Korean 
sides, while allowing it to make changes in and additions to this 
draft as long as these are not of principal importance.
The Chairman of the Government of the Russian Federation,
S. Kirienko
Draft
AGREEMENT
between the Government of the Russian Federation, the Government of 
the Chinese People's Republic, and the Government of the Korean 
Democratic People's Republic on the definition of the line of 
delimitation of the boundary water areas of the three countries on 
the Tumannaja river.
The Government of the Russian Federation, the Government of the 
Chinese People's Republic, and the Government of the Korean 
Democratic People's Republic, hereafter named the Sides,
aiming to strengthen and develop their good-neighbourly and friendly 
ties, governed by the principles of the reciprocal recognition of 
sovereignty, territorial integrity, equality, and reciprocal 
advantages,
on the basis of the existing boundary agreements between the three 
countries,
with the aim of defining a line, forming a boundary on the Tumannaja 
river (Tumèn'czjan, Tumangan) between the water area of the Russian 
Federation and the water area of the Korean Democratic People's 
Republic, and the joint boundary water area of the Chinese People's 
Republic and the Korean Democratic People's Republic (hereafter: line 
delimiting the boundary water areas of the three countries),
have agreed to the following:
Article 1
1. The line delimiting the boundary water areas of the three 
countries on the Tumannaja river is a straight line, running 
perpendicular from boundary marker no. 423 on the Russian-Chinese 
state boundary to the line in the middle of the main channel of the 
river in between the two river banks.
This line marks the boundary of the Chinese-Korean joint boundary 
water area on the Tumannaja river.
2. The state boundary meeting point of the Russian Federation, the 
Chinese People's Republic, and the Korean Democratic People's 
Republic on the Tumannaja river (hereafter  state boundary meeting 
point of the three countries) is located on the point where the line 
delimiting the boundary water areas of the three countries intersects 
the middle line of the main channel of the river.
This point marks at the same time the starting point of the Russian-
Korean state boundary.
Article 2
In the case of any natural changes taking place on the Tumannaja 
river, the location of the line delimiting the boundary water areas 
of the three countries will not change until the Sides agree 
otherwise.
Article 3
1. The line delimiting the boundary water areas of the three 
countries and the state boundary meeting point of the three countries 
will be demarcated by three markers, placed on both banks of the 
Tumannaja river, in line with the line delimiting the boundary water 
areas of the three countries.
As marker no. 1 will serve boundary marker no. 423 on the Russian-
Chinese boundary, located on the left bank of the Tumannaja river, 
and has the following co-ordinates:
Lat. = 42°25'10,2" N.
Long. = 130°38'17,7" E.
Marker no. 2 will be erected on the right bank of the Tumannaja river 
on Korean territory and has the following co-ordinates:
Lat. = 42°24'59,5" N.
Long. = 130°38'06,5" E.
Marker no. 3 will be erected on the left bank of the Tumannaja river 
on Russian territory, its geographical co-ordinates will be 
additionally established in the terrain.
The co-ordinates of the markers are established according to the 
Pyongyang co-ordinate system.
A boundary marker on the state boundary meeting point of the three 
countries, which is located on the water level of the Tumannaja 
river, will not be erected.
2. Marker no. 1 consists of a four-sided granite marker on a concrete 
base. The side facing Russia bears the inscription in the Russian 
language "RF"; the side facing China bears the inscription in the 
Chinese language "China", above the name of the country the state 
coat-of-arms of the CPR has been fixed. Under the names of the 
countries, the number of the boundary marker "423" and the year of 
its establishment "1993" have been inscribed in Arabic numerals. On 
the other two sides of the marker there are no inscriptions.
Marker no. 2 consists of a three-sided granite marker on a concrete 
base. The side facing Russia bears the inscription in the Russian 
language "Russia", the side facing China bears the inscription in the 
Chinese language "China", the side facing Korea bears the inscription 
in the Korean language "Korea". Under the names of the countries, the 
number of the marker and the year of establishment are indicated in 
Arabic numerals.
Marker no. 3 consists of a three-sided granite marker on a concrete 
base. The side facing Russia bears the inscription in the Russian 
language "Russia", the side facing China bears the inscription in the 
Chinese language "China", the side facing Korea bears the inscription 
in the Korean language "Korea". Under the names of the countries, the 
number of the marker and the year of establishment are indicated in 
Arabic numerals.
Drawings and dimensions of the markers mentioned are annexed to this 
Agreement.
Article 4.
1. The Sides will co-operate and will take the appropriate measures 
to prevent that the markers are moved, damaged, or lost.
None of the Sides has the right to unilaterally erect other markers 
that touch on the goals of this Agreement.
2. The Chinese Side is responsible for the conservation and repair of 
marker no. 1, the Korean Side is responsible for that of marker no. 
2, and the Russian side is responsible for that of marker no. 3.
3. In the event of the discovery by one of the Sides that any of the 
markers has been moved, damaged, or lost, this Side should inform the 
other two Sides immediately. The Side that is responsible for the 
conservation and repair of the marker involved has to repair the 
marker in the presence of representatives of the other two Sides, or 
erect a new marker on the place of the former, in accordance with the 
drawings and dimensions as indicated in the annex to this Agreement.
On the re-erection of a marker or the erection of a new marker the 
Sides will draw up and sign a joint protocol.
4. In case it is necessary to change the location of any of the 
markers, the Sides may do so after an agreement has been reached. In 
that case the change in the location of the marker may not lead to a 
change in the line delimiting the boundary water areas of the three 
countries or a change in the state boundary meeting point of the 
three countries, established in the present Agreement.
On the changing of the location of a marker the Sides will draw up 
and sign a joint protocol.
Article 5
After the coming into force of this Agreement, the Sides will, in the 
framework of the trilateral talks, define the concrete location of 
the state boundary meeting point of the three countries and the co-
ordinates of marker no. 3, will erect markers no. 2 and 3, will draw 
up a descriptive protocol of the state boundary meeting point of the 
three countries between the Government of the Russian Federation, the 
Government of the Chinese People's Republic, and the Government of 
the Korean Democratic People's Republic and will draw up a map of the 
area of the state boundary meeting point of the three countries.
Article 6
The present Agreement comes into force at the time of its signing.
Made up in
, the 
th of 
, 199
, in three copies, each of them in the 
Russian, Chinese, and Korean languages, each of the texts having 
equal power.
For the Government of the Russian Federation
For the Government of the Chinese People's Republic
For the Government of the Korean Democratic People's Republic
--- In 
BoundaryPoint@yahoogroups.com, "Peter Smaardijk" 
<smaardijk@y...> wrote:
 > --- In BoundaryPoint@yahoogroups.com, "acroorca2002" <orc@o...> 
 
wrote:
 > > --- In BoundaryPoint@yahoogroups.com, "Jesper Nielsen" 
> > <jesniel@i...> wrote:
> > > http://sunsite.berkeley.edu/EART/korea/200k/11-52-17.jpg
> > 
> > & dig that crazy china proruption with the double chicken neck
> > now visible in all its glory
> > 
> > but isnt there some sort of a condo or dispute or some other 
> > irregularity in this area that could cancel or revise it all
> > 
> > like what is the real deal here
> > does anyone remember
> 
> A possible CNKP river condominium.
> 
> > 
> > & particularly 
> > what is the present status & nature of this trijunction
> 
> I don't know, but in 1998, KPRU was demarcated except for a small 
> part (less than 100 m) between the first KPRU marker pair and 
 
CNKPRU, 
 > which still needs to be defined (acc. to this report from 1998: 
> 
 
http://asiapacific.narod.ru/countries/koreas/border_regulation.htm ).
 > 
> Peter S.