I thought 2011 rain totals (inches) for some US NWS stations would be of interest. From below link:

Just change the "md" in the below address to the appropriate state. My own number is first. Multiply by 25.4 to get mm:

beng (western MD)------52.80

Hagerstown City MD-----53.09

Hagerstown AP, MD------46.76

LaVale MD--------------51.15

Salisbury, MD----------39.16

Wallops Island VA------36.23

Baltimore MD-----------56.52

BALTIMORE Harbor MD----54.06

LYNCHBURG VA-----------38.98

ROANOKE VA-------------45.03

DANVILLE VA------------39.01

NORFOLK VA-------------51.10

RICHMOND VA------------47.54

WASHINGTON NAT AP DC---46.89

CHARLOTTESVILLE VA-----48.31

DULLES AP VA-----------46.20

PITTSBURGH PA----------44.24

WILLIAMSPORT PA--------70.26

HARRISBURG PA----------73.73

ALLENTOWN PA-----------71.72

MOUNT POCONO PA--------80.80

PHILADELPHIA PA--------64.33

READING PA-------------57.16

AVOCA PA---------------59.99

ERIE PA----------------57.44

WILMINGTON DE----------56.58

GEORGETOWN DE----------34.80

BECKLEY WV-------------42.15

CHARLESTON WV----------50.78

ELKINS WV--------------52.33

PARKERSBURG WV---------57.48

HUNTINGTON WV----------62.46

MARTINSBURG WV---------46.83

COLUMBUS OH------------54.96

DAYTON OH--------------56.72

CINCINNATI OH----------73.28

CLEVELAND OH-----------65.32

AKRON OH---------------58.38

YOUNGSTOWN OH----------54.01

MANSFIELD OH-----------56.68

TOLEDO OH--------------48.79

WILMINGTON NC----------43.96

LUMBERTON NC-----------41.33

PIEDMONT TRI AP NC-----43.55

RALEIGH-DURHAM AP NC---43.70

FAYETTEVILLE AP NC-----35.34

ASHEVILLE NC-----------46.04

CHARLOTTE NC-----------44.52

FLORENCE SC------------28.59

GREENVILLE SC----------45.95

COLUMBIA AP SC---------36.62

HAMILTON-OWENS AP SC---43.84

ORANGEBURG AP SC-------37.40

SHREVEPORT LA----------33.07

MONROE LA--------------49.52

LAKE CHARLES LA--------38.64

ALEXANDRIA LA----------35.87

LAFAYETTE LA-----------35.87

BATON ROUGE LA---------49.47

NEW ORLEANS LA---------54.63

LONGVIEW TX------------30.54

LUFKIN TX--------------33.77

TYLER TX---------------24.97

VICTORIA TX------------13.08

CORPUS CHRISTI TX------12.06

COLLEGE STATION TX-----19.97

HOUSTON TX-------------24.57

HOUSTON/HOBBY AP TX----25.41

GALVESTON TX-----------22.95

MIDLAND TX--------------5.49

SAN ANGELO TX-----------9.23

ABILENE TX-------------16.83

AMARILLO TX-------------7.00

BROWNSVILLE TX---------17.94

AUSTIN TX--------------19.68

WICHITA FALLS TX-------12.97

DALLAS FORT WORTH TX---25.88

WACO TX----------------27.63

LUBBOCK TX--------------5.86

INDIANAPOLIS IN--------49.63

FORT WAYNE IN----------49.54

SOUTH BEND IN----------46.48

EVANSVILLE IN----------70.03

MOLINE IL--------------34.83

SPRINGFIELD IL---------30.61

PEORIA IL--------------39.87

ROCKFORD IL------------39.04

CHICAGO-OHARE AP IL----49.83

PADUCAH KY-------------74.85

BOWLING GREEN KY-------63.11

LEXINGTON KY-----------66.35

LOUISVILLE KY----------68.02

JACKSON KY-------------60.01

TRI-CITIES TN----------47.68

KNOXVILLE TN-----------56.64

CHATTANOOGA TN---------64.79

NASHVILLE TN-----------52.14

MEMPHIS TN-------------58.36

ATLANTIC CITY NJ-------48.53

TRENTON NJ-------------59.78

NEWARK NJ--------------69.91

WATERTOWN NY-----------42.21

ROCHESTER NY-----------40.48

BUFFALO NY-------------49.56

CENTRAL PARK NY--------72.81

LAGUARDIA AP NY--------65.34

KENNEDY AP NY----------55.78

BRIDGEPORT CT----------57.88

ALBANY NY--------------53.68

BINGHAMTON NY----------68.05

SYRACUSE NY------------48.04

FLINT MI---------------40.95

DETROIT MI-------------47.70

GRAND RAPIDS MI--------45.09

GREEN BAY WI-----------37.85

LA CROSSE WI-----------35.10

MILWAUKEE WI-----------32.59

MADISON WI-------------30.54

EAU CLAIRE WI----------31.86

ST. LOUIS MO-----------47.17

COLUMBIA MO------------39.68

KANSAS CITY AP MO------36.92

SPRINGFIELD MO---------40.61

GOODLAND KS------------19.33

TOPEKA KS--------------32.89

WICHITA KS-------------26.06

VALENTINE NE-----------21.99

NORTH PLATTE NE--------23.72

SCOTTSBLUFF NE---------18.85

LINCOLN NE-------------29.17

OMAHA NE---------------28.70

PUEBLO CO---------------9.23

ALAMOSA CO--------------4.60

COLORADO SPRINGS CO----16.24

DENVER CO--------------17.31

GRAND JUNCTION CO-------9.76

SALT LAKE CITY UT------19.14

REDDING AP CA----------26.62

SACRAMENTO AP CA-------16.95

MODESTO CA-------------10.85

STOCKTON AP CA---------10.11

THERMAL AP CA-----------1.91

SAN DIEGO/LIND AP CA----9.08

CAMPO ASOS CA----------12.99

PALM SPRINGS AP CA------2.95

BAKERSFIELD CA----------4.39

FRESNO CA--------------10.92

LOS ANGELES (USC) CA---12.26

LOS ANGELES AP CA-------9.87

SANTA BARBARA AP CA----19.53

SAN FRANCISCO AP CA----16.59

CRESCENT CITY CA-------52.63

UKIAH CA---------------28.77

OLYMPIA WA-------------50.69

SEATTLE-TACOMA WA------36.40

YAKIMA WA---------------7.34

SPOKANE WA-------------15.40

ATHENS GA--------------37.11

ATLANTA GA-------------39.23

COLUMBUS GA------------39.74

MACON GA---------------33.14

AUGUSTA GA-------------29.43

SAVANNAH GA------------34.85

NAPLES FL--------------38.19

FORT LAUDERDALE FL-----40.62

WEST PALM BEACH FL-----47.89

MIAMI FL---------------63.78

FORT MYERS FL----------65.79

SARASOTA FL------------40.60

TAMPA FL---------------53.22

APALACHICOLA FL--------47.43

TALLAHASSEE FL---------34.81

PENSACOLA FL-----------48.68

DAYTONA BEACH FL-------48.71

EL DORADO AR-----------37.62

TEXARKANA AR-----------30.69

DE QUEEN AR------------36.57

HARRISON AR------------52.01

PINE BLUFF AR----------48.70

DUBUQUE IA-------------46.29

DES MOINES IA----------37.19

WATERLOO IA------------30.46

SIOUX CITY IA----------24.13

Here is a link that might be useful: US (MD) NWS stations