B737-700
Flight Crew Air Transport Pilot (ATP)
Flight Crew Last 90 Days 222; Flight Crew Type 12100
Situational Awareness
Ground Event / Encounter Other / Unknown
Flight Crew Became Reoriented
Aircraft; Airport
Yesterday we landed a heavy -700 at LGA on Runway 22 just after a rain shower had passed the airport.  Aircraft ahead of us were reporting 'Fair' braking action so we changed our data from 'Good' to 'Fair' and decided to land flaps 40 rather than 30 with autobrakes set at '3'.  On short final; I noted numerous fairly large puddles on the runway.  In typical fashion the initial deceleration was about normal.  However as we decelerated through about 110; the antiskid began cycling; and below 60 we were sliding quite a bit.  We also called 'Fair' braking but in retrospect I think it was 'Poor'.The runway doesn't appear adequately crowned and doesn't appear to be typical concrete since it is black in color.  This is the first time I've landed at LGA with a thoroughly wet runway.  I would compare braking capability with Texas black top roads when oil from the tar seeps to the surface soon after it gets wet.  Of all our airports; I think LGA Runway 22 has the worst braking coefficient when wet.  This can be hazardous.You might want do a Flight Data Recorder (FDR) pull on this aircraft to see how the aircraft actually decelerated.  And; perhaps we should gather braking action data and work with the folks at LGA to have this runway resurfaced.  In the meantime we might want our Crews to compute braking whenever the runway is wet at LGA.
A B737-700 Captain believes that a thoroughly wet Runway 22 at LGA produces less than fair braking action due to drainage and surface condition.