The phrase "an evident amount" is correct and usable in written English.
It can be used when referring to a quantity or degree that is clear or obvious in a particular context.
Example: "There was an evident amount of support for the new policy among the community members."
Alternatives: "a clear amount" or "a noticeable amount".
Finally, Fig. 12d shows the steering control system response; after cooperative control has been activated, there is an evident reduction in the amount of noise in the reference signal.
It amounted to an evident attempt to rally the entire Islamic world against the United States -- an outcome that the Bush administration and its allies have sought to avoid by saying their argument is with terrorists, not with Islam, and by reaching out to Arab states.
Since 2005 it has become evident that a good amount of development in open chemical information is driven by the demands of neighbouring scientific fields.
Unfortunately these functional alterations often become evident when a significant amount of the nerve fibers that compose the optic nerve has been irreversibly lost.
But the emotion in his voice as he accepted the award from Martina Navratilova in Miami was evident: this means an enormous amount to him, and he would have loved to be in Leeds to accept the award in person.
However, the presence of E-cadherin was evident only when an increased amount of each fraction was loaded indicating all organelles positive for NDRG1 were not positive for E-cadherin.
On this visit Mr. Citroni regarded his daughter with evident affection and a certain amount of wonder, as if unsure just how a writer had landed in the family.
It is also fairly evident that, after a certain amount of internal harrumphing and chuntering from the backbenches of the kind that we heard this week from Graham Brady and Douglas Carswell, the Conservatives are open to it too.
This is evident upon degrading a defined amount of chlorite (340 μM) with increasing enzyme concentrations.
Upon multiple compressions and relaxations of the film the pressure area isotherms do not completely overlay, with a small amount of hysteresis evident on each cycle.
