Well viscosity relates to fluids in motion, so in your completely static situation, the viscosity would not have any effect.
Unless I have made a conceptual mistake (which is very possible), surface tension plays essentially no role in the damping of the impact of a fast-moving object with a liquid surface.
To see this, a simple way to model it is to pretend that the water isn't there, but only its surface is, and see what happens when an object deforms this surface. Let there be a sphere of density $\rho=1.0\text{g/cm}^3$ and radius $r=1\text{ft}$ with velocity $v=200\text{mph}$, and let it collide with the interface and sink in halfways, stretching the interface over the surface of the sphere.
Before the collision, the surface energy of the patch of interface that the sphere collides with is
$$E_i=\gamma A_1=\gamma\pi r^2$$
and after collision, the stretched surface has a surface energy of
$$E_f=\gamma A_2=2\gamma\pi r^2$$
and so the energy loss by the sphere becomes
$$\Delta E=E_f-E_i=\gamma\pi r^2$$
which in the case of water becomes (in Mathematica):
<< PhysicalConstants`
r = 1 Foot;
\[Gamma] = 72.8 Dyne/(Centi Meter);
Convert[\[Pi] r^2 \[Gamma], Joule]
0.0212477 Joule
Meanwhile, the kinetic energy of the ball is
$$E_k=\frac{1}{2}\left(\frac{4}{3}\pi r^3\rho\right)v^2$$ which is:
\[Rho] = 1.0 Gram/(Centi Meter)^3;
v = 200 Mile/Hour;
Convert[1/2 (4/3 \[Pi] r^3 \[Rho]) v^2, Joule]
474085 Joule
and hence the surface tension provides less than one millionth of the slowdown associated with the collision of the sphere with the liquid surface. Thus the surface tension component is negligible.
I'd suspect that kinematic drag provides most of the actual energy loss (you're basically slamming into 200 pounds of water and shoving it out of the way when you collide), but I've never taken fluid dynamics so I'll await explanations from people with more experience.
Best Answer
The relevant forces are adhesion (the attractive force between dissimilar molecules) and cohesion (the attractive force between similar molecules). Adhesion sticks the water molecules close to the metal-water interface to the metal. Cohesion sticks the water molecules far from the metal-water interface to the water molecules close to the metal-water interface.
Surface tension (the bulk force difference between the air side of the air-water interface, where there is no cohesion force, and the water side of the air-water interface, where there is a cohesion force) plays a minor role: it keeps the shape of the stream roughly dome shaped.