{{geobox | river | name = middle santiam river | category_hide = 1 | native_name = | other_name = | other_name1 = | etymology = kalapuya tribe that lived near the river until removal to the grande ronde reservation | image = | image_size = 300 | image_caption = | country = united states | country_flag = 1 | state = oregon | district_type = county | district = linn | region = | region1 = | city = | city1 = | length_imperial = 39 | length_note =  the map quadrants include river mile (rm) markers for the river's first . the additional length is approximate. | watershed_imperial = 104 |watershed_round = 0 | watershed_note =  | discharge_imperial = | discharge_max_imperial = | discharge_min_imperial = | discharge_note = | discharge1_location = | discharge1_imperial = | source_name = iron mountain | source_location = cascade range | source_district = willamette national forest | source_region = linn county | source_state = oregon | source_country = | source_lat_d = 44 | source_lat_m = 24 | source_lat_s = 09 | source_lat_ns = n | source_long_d = 122 | source_long_m = 09 | source_long_s = 43 | source_long_ew = w | source_coordinates_note =  | source_elevation_imperial = 4149 | source_elevation_note = google earth elevation for gnis coordinates | mouth_name = south santiam river | mouth_location = foster reservoir | mouth_district = linn county | mouth_region = | mouth_state = oregon | mouth_country = | mouth_lat_d = 44 | mouth_lat_m = 24 | mouth_lat_s = 58 | mouth_lat_ns = n | mouth_long_d = 122 | mouth_long_m = 38 | mouth_long_s = 02 | mouth_long_ew = w | mouth_coordinates_note = | mouth_elevation_imperial = 640 | mouth_elevation_note = | tributary_left = | tributary_left1 = | tributary_right = 
Landforms_of_Linn_County,_Oregon Rivers_of_Oregon